org.hibnet.webpipes.processor.googleclosure

Class GoogleClosureCompressorProcessor

java.lang.Object

org.hibnet.webpipes.processor.ResourceProcessor

org.hibnet.webpipes.processor.googleclosure.GoogleClosureCompressorProcessor

public class GoogleClosureCompressorProcessor
extends ResourceProcessor

Uses Google closure compiler for js minimization.

See Also:

http://blog.bolinfest.com/2009/11/calling-closure-compiler-from-java.html

Field Summary

Fields

Modifier and Type	Field and Description
private com.google.javascript.jscomp.CompilationLevel	compilationLevel CompilationLevel to use for compression.
private ObjectPoolHelper<com.google.javascript.jscomp.CompilerOptions>	optionsPool Reuse options(which are not thread safe).

Constructor Summary

Constructors

Constructor and Description
GoogleClosureCompressorProcessor() Uses google closure compiler with default compilation level: CompilationLevel.SIMPLE_OPTIMIZATIONS
GoogleClosureCompressorProcessor(com.google.javascript.jscomp.CompilationLevel compilationLevel) Uses google closure compiler with specified compilation level.

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
protected com.google.javascript.jscomp.SourceFile[]	getExterns(Resource resource)
private com.google.javascript.jscomp.Compiler	newCompiler(com.google.javascript.jscomp.CompilerOptions compilerOptions)
protected com.google.javascript.jscomp.CompilerOptions	newCompilerOptions()
java.lang.String	process(Resource resource, java.lang.String content)
void	setCompilationLevel(com.google.javascript.jscomp.CompilationLevel compilationLevel)

Methods inherited from class java.lang.Object

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

Field Detail

compilationLevel

private com.google.javascript.jscomp.CompilationLevel compilationLevel

CompilationLevel to use for compression.

optionsPool

private ObjectPoolHelper<com.google.javascript.jscomp.CompilerOptions> optionsPool

Reuse options(which are not thread safe).

Constructor Detail

GoogleClosureCompressorProcessor

public GoogleClosureCompressorProcessor()

Uses google closure compiler with default compilation level: CompilationLevel.SIMPLE_OPTIMIZATIONS

GoogleClosureCompressorProcessor

public GoogleClosureCompressorProcessor(com.google.javascript.jscomp.CompilationLevel compilationLevel)

Uses google closure compiler with specified compilation level.

Parameters:

compilationLevel - not null CompilationLevel enum.

Method Detail

setCompilationLevel

public void setCompilationLevel(com.google.javascript.jscomp.CompilationLevel compilationLevel)

Parameters:

compilationLevel - the compilationLevel to set

process

public java.lang.String process(Resource resource,
                       java.lang.String content)
                         throws java.io.IOException

Specified by:

process in class ResourceProcessor

Throws:

java.io.IOException

newCompiler

private com.google.javascript.jscomp.Compiler newCompiler(com.google.javascript.jscomp.CompilerOptions compilerOptions)

getExterns

protected com.google.javascript.jscomp.SourceFile[] getExterns(Resource resource)

Parameters:

resource - Currently processed resource. The resource can be null, when the closure compiler is used as a post processor.

Returns:

An Array of externs files for the resource to process.

newCompilerOptions

protected com.google.javascript.jscomp.CompilerOptions newCompilerOptions()

Returns:

default CompilerOptions object to be used by compressor.

destroy

public void destroy()
             throws java.lang.Exception

Overrides:

destroy in class ResourceProcessor

Throws:

java.lang.Exception