com.progress.open4gl.util

Class VersionFromManifestReader

java.lang.Object

com.progress.open4gl.util.VersionFromManifestReader

public class VersionFromManifestReader
extends java.lang.Object

Reads the version from the manifest file. The build is expected to write a META-INF/MANIFEST.MF into the .jar file with the correct headers. This requires that "Bundle-Name: <some value>" and "Implementation-Version: <version>" attributes be present in the file. if these cannot be reader, then the caller has to determine what to do, as this will leave the major, minor, and maint version properties all at 999. Version is expected to be in major.mainor.maint format, where each section is an integer. Example: 12.3.0

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	BUILD_TIMESTAMP
static java.lang.String	IMPLEMENTATION_VERSION

Constructor Summary

Constructors

Constructor and Description
VersionFromManifestReader()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getBuildTimestamp() return build timestamp from manifest, as identified by the "Build-Timestamp" attribute
int	getMaintVersion() Retrieve the maintenance version identified in the library manifest.
int	getMajorVersion() Retrieve major version identified in the libray manifest.
int	getMinorVersion() Retrieve minor version identified in the library manifest.
java.lang.String	getRawVersion() Return the library version from the manifest, as identified by the "Implementation-Version" attibute
boolean	loadVersionFromManifest(java.lang.String bundleName) attempts to locate the manifest that contains the correct bundle information, and parses the implementation version information from the manifest.
boolean	loadVersionFromStream(java.lang.String bundleName, java.io.InputStream in) tries to load the value of "Implementation-Version" from the stream which is assumed to be a manifest file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

IMPLEMENTATION_VERSION

public static final java.lang.String IMPLEMENTATION_VERSION

See Also:

Constant Field Values

BUILD_TIMESTAMP

public static final java.lang.String BUILD_TIMESTAMP

See Also:

Constant Field Values

Constructor Detail

VersionFromManifestReader

public VersionFromManifestReader()

Method Detail

loadVersionFromManifest

public boolean loadVersionFromManifest(java.lang.String bundleName)
                                throws java.io.IOException

attempts to locate the manifest that contains the correct bundle information, and parses the implementation version information from the manifest. UNFORUNATELY, java has no way to fetch the EXACT manifest from the correct file...so we have to look through all of them to find the right one...and we only know it is the right one because it has the bundle-name declared in it. We use gradle to write the manifest so it should always be there if using the .jar file

Throws:

java.io.IOException

loadVersionFromStream

public boolean loadVersionFromStream(java.lang.String bundleName,
                                     java.io.InputStream in)
                              throws java.io.IOException

tries to load the value of "Implementation-Version" from the stream which is assumed to be a manifest file. This is only loaded if the manifest has a property called "Bundle-Name" which contains the correct value.

Parameters:

in -

Throws:

java.io.IOException

getMajorVersion

public int getMajorVersion()

Retrieve major version identified in the libray manifest.

Returns:

getMinorVersion

public int getMinorVersion()

Retrieve minor version identified in the library manifest.

Returns:

getMaintVersion

public int getMaintVersion()

Retrieve the maintenance version identified in the library manifest.

Returns:

getRawVersion

public java.lang.String getRawVersion()

Return the library version from the manifest, as identified by the "Implementation-Version" attibute

Returns:

getBuildTimestamp

public java.lang.String getBuildTimestamp()

return build timestamp from manifest, as identified by the "Build-Timestamp" attribute

Returns: