CkCompression Java Reference Documentation

CkCompression

Current Version: 9.5.0.97

Data compression component implementing the PPMD, Bzip2, Deflate, and LZW compression algorithms. .NET, ActiveX, and C++ implementations provide progress monitoring and abort capabilities. Provides a unified API for all supported compression algorithms.

Object Creation

CkCompression obj = new CkCompression();

Properties

Algorithm
void get_Algorithm(CkString str);
String algorithm();
void put_Algorithm(String newVal);

The compression algorithm to be used. Should be set to either "ppmd", "deflate", "zlib", "bzip2", or "lzw".

Note: The PPMD compression algorithm is only available for 32-bit builds. It is not available for 64-bit implementations. Also, this PPMD implementation is the "J" variant.

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Charset
void get_Charset(CkString str);
String charset();
void put_Charset(String newVal);

Only applies to methods that compress or decompress strings. This specifies the character encoding that the string should be converted to before compression. Many programming languages use Unicode (2 bytes per char) for representing characters. This property allows for the string to be converted to a 1-byte per char encoding prior to compression.

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DebugLogFilePath
void get_DebugLogFilePath(CkString str);
String debugLogFilePath();
void put_DebugLogFilePath(String newVal);

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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DeflateLevel
int get_DeflateLevel();
void put_DeflateLevel(int newVal);
Introduced in version 9.5.0.73

This property allows for customization of the compression level for the "deflate" and "zlib" compression algoirthms. ("zlib" is just the deflate algorithm with a zlib header.) A value of 0 = no compression, while 9 = maximum compression. The default is 6.

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EncodingMode
void get_EncodingMode(CkString str);
String encodingMode();
void put_EncodingMode(String newVal);

Controls the encoding expected by methods ending in "ENC", such as CompressBytesENC. Valid values are "base64", "hex", "url", and "quoted-printable". Compression methods ending in ENC return the binary compressed data as an encoded string using this encoding. Decompress methods expect the input string to be this encoding.

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HeartbeatMs
int get_HeartbeatMs();
void put_HeartbeatMs(int newVal);

The number of milliseconds between each AbortCheck event callback. The AbortCheck callback allows an application to abort any method call prior to completion. If HeartbeatMs is 0 (the default), no AbortCheck event callbacks will fire.

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LastErrorHtml
void get_LastErrorHtml(CkString str);
String lastErrorHtml();

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
void get_LastErrorText(CkString str);
String lastErrorText();

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
void get_LastErrorXml(CkString str);
String lastErrorXml();

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
boolean get_LastMethodSuccess();
void put_LastMethodSuccess(boolean newVal);

Indicate whether the last method call succeeded or failed. A value of true indicates success, a value of false indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = true and failure = false.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to true. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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VerboseLogging
boolean get_VerboseLogging();
void put_VerboseLogging(boolean newVal);

If set to true, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is false. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
void get_Version(CkString str);
String version();

Version of the component/library, such as "9.5.0.94"

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Methods

BeginCompressBytes
boolean BeginCompressBytes(CkByteData data, CkByteData outData);

Large amounts of binary byte data may be compressed in chunks by first calling BeginCompressBytes, followed by 0 or more calls to MoreCompressedBytes, and ending with a final call to EndCompressBytes. Each call returns 0 or more bytes of compressed data which may be output to a compressed data stream (such as a file, socket, etc.).

Returns true for success, false for failure.

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BeginCompressBytesAsync (Android™) (Java)
CkTask BeginCompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the BeginCompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginCompressBytesENC
boolean BeginCompressBytesENC(CkByteData data, CkString outStr);
String beginCompressBytesENC(CkByteData data);

Large amounts of binary byte data may be compressed in chunks by first calling BeginCompressBytesENC, followed by 0 or more calls to MoreCompressedBytesENC, and ending with a final call to EndCompressBytesENC. Each call returns 0 or more characters of compressed data (encoded as a string according to the EncodingMode property setting) which may be output to a compressed data stream (such as a file, socket, etc.).

Returns true for success, false for failure.

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BeginCompressBytesENCAsync (Android™) (Java)
CkTask BeginCompressBytesENCAsync(CkByteData data);

Creates an asynchronous task to call the BeginCompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginCompressString
boolean BeginCompressString(String str, CkByteData outData);

Large amounts of string data may be compressed in chunks by first calling BeginCompressString, followed by 0 or more calls to MoreCompressedString, and ending with a final call to EndCompressString. Each call returns 0 or more bytes of compressed data which may be output to a compressed data stream (such as a file, socket, etc.).

Returns true for success, false for failure.

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BeginCompressStringAsync (Android™) (Java)
CkTask BeginCompressStringAsync(String str);

Creates an asynchronous task to call the BeginCompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginCompressStringENC
boolean BeginCompressStringENC(String str, CkString outStr);
String beginCompressStringENC(String str);

Large amounts of string data may be compressed in chunks by first calling BeginCompressStringENC, followed by 0 or more calls to MoreCompressedStringENC, and ending with a final call to EndCompressStringENC. Each call returns 0 or more characters of compressed data (encoded as a string according to the EncodingMode property setting) which may be output to a compressed data stream (such as a file, socket, etc.).

Returns true for success, false for failure.

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BeginCompressStringENCAsync (Android™) (Java)
CkTask BeginCompressStringENCAsync(String str);

Creates an asynchronous task to call the BeginCompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginDecompressBytes
boolean BeginDecompressBytes(CkByteData data, CkByteData outData);

A compressed data stream may be decompressed in chunks by first calling BeginDecompressBytes, followed by 0 or more calls to MoreDecompressedBytes, and ending with a final call to EndDecompressBytes. Each call returns 0 or more bytes of decompressed data.

Returns true for success, false for failure.

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BeginDecompressBytesAsync (Android™) (Java)
CkTask BeginDecompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the BeginDecompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginDecompressBytesENC
boolean BeginDecompressBytesENC(String str, CkByteData outData);

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

A compressed data stream may be decompressed in chunks by first calling BeginDecompressBytesENC, followed by 0 or more calls to MoreDecompressedBytesENC, and ending with a final call to EndDecompressBytesENC. Each call returns 0 or more bytes of decompressed data.

Returns true for success, false for failure.

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BeginDecompressBytesENCAsync (Android™) (Java)
CkTask BeginDecompressBytesENCAsync(String str);

Creates an asynchronous task to call the BeginDecompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginDecompressString
boolean BeginDecompressString(CkByteData data, CkString outStr);
String beginDecompressString(CkByteData data);

A compressed data stream may be decompressed in chunks by first calling BeginDecompressString, followed by 0 or more calls to MoreDecompressedString, and ending with a final call to EndDecompressString. Each call returns 0 or more characters of decompressed text.

Returns true for success, false for failure.

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BeginDecompressStringAsync (Android™) (Java)
CkTask BeginDecompressStringAsync(CkByteData data);

Creates an asynchronous task to call the BeginDecompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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BeginDecompressStringENC
boolean BeginDecompressStringENC(String str, CkString outStr);
String beginDecompressStringENC(String str);

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

A compressed data stream may be decompressed in chunks by first calling BeginDecompressStringENC, followed by 0 or more calls to MoreDecompressedStringENC, and ending with a final call to EndDecompressStringENC. Each call returns 0 or more characters of decompressed text.

Returns true for success, false for failure.

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BeginDecompressStringENCAsync (Android™) (Java)
CkTask BeginDecompressStringENCAsync(String str);

Creates an asynchronous task to call the BeginDecompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressBd
boolean CompressBd(CkBinData binData);
Introduced in version 9.5.0.66

Compresses the data contained in a BinData object.

Returns true for success, false for failure.

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CompressBdAsync (Android™) (Java)
CkTask CompressBdAsync(CkBinData binData);
Introduced in version 9.5.0.66

Creates an asynchronous task to call the CompressBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressBytes
boolean CompressBytes(CkByteData data, CkByteData outData);

Compresses byte data.

Returns true for success, false for failure.

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CompressBytesAsync (Android™) (Java)
CkTask CompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the CompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressBytesENC
boolean CompressBytesENC(CkByteData data, CkString outStr);
String compressBytesENC(CkByteData data);

Compresses bytes and returns the compressed data encoded to a string. The encoding (hex, base64, etc.) is determined by the EncodingMode property setting.

Returns true for success, false for failure.

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CompressBytesENCAsync (Android™) (Java)
CkTask CompressBytesENCAsync(CkByteData data);

Creates an asynchronous task to call the CompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressFile
boolean CompressFile(String srcPath, String destPath);

Performs file-to-file compression. Files of any size may be compressed because the file is compressed internally in streaming mode.

Returns true for success, false for failure.

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CompressFileAsync (Android™) (Java)
CkTask CompressFileAsync(String srcPath, String destPath);

Creates an asynchronous task to call the CompressFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressSb
boolean CompressSb(CkStringBuilder sb, CkBinData binData);
Introduced in version 9.5.0.73

Compresses the contents of sb and appends the compressed bytes to binData.

Returns true for success, false for failure.

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CompressSbAsync (Android™) (Java)
CkTask CompressSbAsync(CkStringBuilder sb, CkBinData binData);
Introduced in version 9.5.0.73

Creates an asynchronous task to call the CompressSb method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressStream
boolean CompressStream(CkStream strm);
Introduced in version 9.5.0.56

Compresses a stream. Internally, the strm's source is read, compressed, and the compressed data written to the strm's sink. It does this in streaming fashion. Extremely large or even infinite streams can be compressed with stable ungrowing memory usage.

Returns true for success, false for failure.

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CompressStreamAsync (Android™) (Java)
CkTask CompressStreamAsync(CkStream strm);
Introduced in version 9.5.0.56

Creates an asynchronous task to call the CompressStream method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressString
boolean CompressString(String str, CkByteData outData);

Compresses a string.

Returns true for success, false for failure.

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CompressStringAsync (Android™) (Java)
CkTask CompressStringAsync(String str);

Creates an asynchronous task to call the CompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CompressStringENC
boolean CompressStringENC(String str, CkString outStr);
String compressStringENC(String str);

Compresses a string and returns the compressed data encoded to a string. The output encoding (hex, base64, etc.) is determined by the EncodingMode property setting.

Returns true for success, false for failure.

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CompressStringENCAsync (Android™) (Java)
CkTask CompressStringENCAsync(String str);

Creates an asynchronous task to call the CompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressBd
boolean DecompressBd(CkBinData binData);
Introduced in version 9.5.0.66

Decompresses the data contained in a BinData object.

Returns true for success, false for failure.

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DecompressBdAsync (Android™) (Java)
CkTask DecompressBdAsync(CkBinData binData);
Introduced in version 9.5.0.66

Creates an asynchronous task to call the DecompressBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressBytes
boolean DecompressBytes(CkByteData data, CkByteData outData);

The opposite of CompressBytes.

Returns true for success, false for failure.

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DecompressBytesAsync (Android™) (Java)
CkTask DecompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the DecompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressBytesENC
boolean DecompressBytesENC(String encodedCompressedData, CkByteData outData);

The opposite of CompressBytesENC. encodedCompressedData contains the compressed data as an encoded string (hex, base64, etc) as specified by the EncodingMode property setting.

Returns true for success, false for failure.

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DecompressBytesENCAsync (Android™) (Java)
CkTask DecompressBytesENCAsync(String encodedCompressedData);

Creates an asynchronous task to call the DecompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressFile
boolean DecompressFile(String srcPath, String destPath);

Performs file-to-file decompression (the opposite of CompressFile). Internally the file is decompressed in streaming mode which allows files of any size to be decompressed.

Returns true for success, false for failure.

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DecompressFileAsync (Android™) (Java)
CkTask DecompressFileAsync(String srcPath, String destPath);

Creates an asynchronous task to call the DecompressFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressSb
boolean DecompressSb(CkBinData binData, CkStringBuilder sb);
Introduced in version 9.5.0.73

Decompresses the contents of binData and appends the decompressed string to sb.

Returns true for success, false for failure.

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DecompressSbAsync (Android™) (Java)
CkTask DecompressSbAsync(CkBinData binData, CkStringBuilder sb);
Introduced in version 9.5.0.73

Creates an asynchronous task to call the DecompressSb method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressStream
boolean DecompressStream(CkStream strm);
Introduced in version 9.5.0.56

Decompresses a stream. Internally, the strm's source is read, decompressed, and the decompressed data written to the strm's sink. It does this in streaming fashion. Extremely large or even infinite streams can be decompressed with stable ungrowing memory usage.

Returns true for success, false for failure.

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DecompressStreamAsync (Android™) (Java)
CkTask DecompressStreamAsync(CkStream strm);
Introduced in version 9.5.0.56

Creates an asynchronous task to call the DecompressStream method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressString
boolean DecompressString(CkByteData data, CkString outStr);
String decompressString(CkByteData data);

Takes compressed bytes, decompresses, and returns the resulting string.

Returns true for success, false for failure.

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DecompressStringAsync (Android™) (Java)
CkTask DecompressStringAsync(CkByteData data);

Creates an asynchronous task to call the DecompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecompressStringENC
boolean DecompressStringENC(String encodedCompressedData, CkString outStr);
String decompressStringENC(String encodedCompressedData);

The opposite of CompressStringENC. encodedCompressedData contains the compressed data as an encoded string (hex, base64, etc) as specified by the EncodingMode property setting.

Returns true for success, false for failure.

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DecompressStringENCAsync (Android™) (Java)
CkTask DecompressStringENCAsync(String encodedCompressedData);

Creates an asynchronous task to call the DecompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndCompressBytes
boolean EndCompressBytes(CkByteData outData);

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressBytes)

Returns true for success, false for failure.

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EndCompressBytesAsync (Android™) (Java)
CkTask EndCompressBytesAsync();

Creates an asynchronous task to call the EndCompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndCompressBytesENC
boolean EndCompressBytesENC(CkString outStr);
String endCompressBytesENC();

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressBytesENC)

Returns true for success, false for failure.

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EndCompressBytesENCAsync (Android™) (Java)
CkTask EndCompressBytesENCAsync();

Creates an asynchronous task to call the EndCompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndCompressString
boolean EndCompressString(CkByteData outData);

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressString)

Returns true for success, false for failure.

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EndCompressStringAsync (Android™) (Java)
CkTask EndCompressStringAsync();

Creates an asynchronous task to call the EndCompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndCompressStringENC
boolean EndCompressStringENC(CkString outStr);
String endCompressStringENC();

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressStringENC)

Returns true for success, false for failure.

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EndCompressStringENCAsync (Android™) (Java)
CkTask EndCompressStringENCAsync();

Creates an asynchronous task to call the EndCompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndDecompressBytes
boolean EndDecompressBytes(CkByteData outData);

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

(See BeginDecompressBytes)

Returns true for success, false for failure.

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EndDecompressBytesAsync (Android™) (Java)
CkTask EndDecompressBytesAsync();

Creates an asynchronous task to call the EndDecompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndDecompressBytesENC
boolean EndDecompressBytesENC(CkByteData outData);

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressBytesENC)

Returns true for success, false for failure.

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EndDecompressBytesENCAsync (Android™) (Java)
CkTask EndDecompressBytesENCAsync();

Creates an asynchronous task to call the EndDecompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndDecompressString
boolean EndDecompressString(CkString outStr);
String endDecompressString();

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

(See BeginDecompressString)

Returns true for success, false for failure.

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EndDecompressStringAsync (Android™) (Java)
CkTask EndDecompressStringAsync();

Creates an asynchronous task to call the EndDecompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EndDecompressStringENC
boolean EndDecompressStringENC(CkString outStr);
String endDecompressStringENC();

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressStringENC)

Returns true for success, false for failure.

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EndDecompressStringENCAsync (Android™) (Java)
CkTask EndDecompressStringENCAsync();

Creates an asynchronous task to call the EndDecompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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LoadTaskCaller
boolean LoadTaskCaller(CkTask task);
Introduced in version 9.5.0.80

Loads the caller of the task's async method.

Returns true for success, false for failure.

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MoreCompressBytes
boolean MoreCompressBytes(CkByteData data, CkByteData outData);

(See BeginCompressBytes)

Returns true for success, false for failure.

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MoreCompressBytesAsync (Android™) (Java)
CkTask MoreCompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the MoreCompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreCompressBytesENC
boolean MoreCompressBytesENC(CkByteData data, CkString outStr);
String moreCompressBytesENC(CkByteData data);

(See BeginCompressBytesENC)

Returns true for success, false for failure.

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MoreCompressBytesENCAsync (Android™) (Java)
CkTask MoreCompressBytesENCAsync(CkByteData data);

Creates an asynchronous task to call the MoreCompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreCompressString
boolean MoreCompressString(String str, CkByteData outData);

(See BeginCompressString)

Returns true for success, false for failure.

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MoreCompressStringAsync (Android™) (Java)
CkTask MoreCompressStringAsync(String str);

Creates an asynchronous task to call the MoreCompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreCompressStringENC
boolean MoreCompressStringENC(String str, CkString outStr);
String moreCompressStringENC(String str);

(See BeginCompressStringENC)

Returns true for success, false for failure.

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MoreCompressStringENCAsync (Android™) (Java)
CkTask MoreCompressStringENCAsync(String str);

Creates an asynchronous task to call the MoreCompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreDecompressBytes
boolean MoreDecompressBytes(CkByteData data, CkByteData outData);

(See BeginDecompressBytes)

Returns true for success, false for failure.

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MoreDecompressBytesAsync (Android™) (Java)
CkTask MoreDecompressBytesAsync(CkByteData data);

Creates an asynchronous task to call the MoreDecompressBytes method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreDecompressBytesENC
boolean MoreDecompressBytesENC(String str, CkByteData outData);

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressBytesENC)

Returns true for success, false for failure.

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MoreDecompressBytesENCAsync (Android™) (Java)
CkTask MoreDecompressBytesENCAsync(String str);

Creates an asynchronous task to call the MoreDecompressBytesENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreDecompressString
boolean MoreDecompressString(CkByteData data, CkString outStr);
String moreDecompressString(CkByteData data);

(See BeginDecompressString)

Returns true for success, false for failure.

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MoreDecompressStringAsync (Android™) (Java)
CkTask MoreDecompressStringAsync(CkByteData data);

Creates an asynchronous task to call the MoreDecompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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MoreDecompressStringENC
boolean MoreDecompressStringENC(String str, CkString outStr);
String moreDecompressStringENC(String str);

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressStringENC)

Returns true for success, false for failure.

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MoreDecompressStringENCAsync (Android™) (Java)
CkTask MoreDecompressStringENCAsync(String str);

Creates an asynchronous task to call the MoreDecompressStringENC method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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Events

Chilkat supports event callbacks in Java (including Android) starting in version 9.5.0.52. To implement an event callback, your application would define and implement a class that derives from CkBaseProgress. Your application can implement methods to override some or all of the default/empty method implementations of the CkBaseProgress base class.

For example:

// Install an event callback handler to get progress events.
MyBaseProgress compressionProgress = new MyBaseProgress();
http.put_EventCallbackObject(compressionProgress);

MyBaseProgress example:

import com.chilkatsoft.CkBaseProgress;
import com.chilkatsoft.CkTask;

public class MyBaseProgress extends CkBaseProgress 
{	
  public boolean AbortCheck()
  {
    System.out.println("AbortCheck");
    // Return true to abort, false to allow the method to continue.
    return false;
  }
  	
  // pctDone is a value from 0 to 100
  // (it is actually value from 0 to the PercentDoneScale property setting)
  public boolean PercentDone(int pctDone)
  {
    System.out.println(pctDone);
    // Return true to abort, false to allow the method to continue.
    // Note: A PercentDone event is the equivalent of an AbortCheck.  
    // When PercentDone events are frequently firing, AbortCheck events are suppressed.
    // AbortCheck events will fire when the time between PercentDone events is longer 
    // than the HeartbeatMs property setting.
    return false;
  }
  
  public void ProgressInfo(String name, String value)
  {
    System.out.println(name + ": " + value);
  }
  
  public void TaskCompleted(CkTask task)
  {
     System.out.println("task completed!");
  }
  
}
AbortCheck
public boolean AbortCheck();

Provides the opportunity for a method call to be aborted. The AbortCheck event is fired periodically based on the value of the HeartbeatMs property. If HeartbeatMs is 0, then no AbortCheck events will fire. As an example, to fire 5 AbortCheck events per second, set the HeartbeatMs property equal to 200. Return true to abort; return false to continue (not abort)

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PercentDone
public boolean PercentDone(int pctDone);

Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This event is only fired when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For operations (Chilkat method calls) that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).

The PercentDone callback counts as an AbortCheck event. For method calls that complete quickly such that PercentDone events fire, it may be that AbortCheck events don't fire because the opportunity to abort is already provided in the PercentDone callback. For time consuming operations, where the amount of time between PercentDone callbacks are long, AbortCheck callbacks may be used to allow for the operation to be aborted in a more responsive manner.

Return true to abort; return false to continue (not abort)

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ProgressInfo
public void ProgressInfo(String name, String value);

A general name/value event that provides information about what is happening during a method call. To find out what information is available, write code to handle this event and log the name/value pairs. Most are self-explanatory.

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TaskCompleted
public void TaskCompleted(CkTask task);

Called in the background thread when an asynchronous task completes.

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