Package org.apache.jasper.compiler

Class JDTJavaCompiler

java.lang.Object

org.apache.jasper.compiler.JDTJavaCompiler

All Implemented Interfaces:

JavaCompiler

public class JDTJavaCompiler
extends java.lang.Object
implements JavaCompiler

JDT class compiler. This compiler will load source dependencies from the context classloader, reducing dramatically disk access during the compilation process.

Field Summary

Fields

Modifier and Type	Field	Description
private JspCompilationContext	ctxt
private ErrorDispatcher	errDispatcher
private static java.lang.reflect.Method	GET_PROBLEM_METH
private java.lang.String	javaFileName
private java.util.logging.Logger	log
private java.util.Map	settings
private static boolean	USE_INTROSPECTION_TO_INVOKE_GET_PROBLEM

Constructor Summary

Constructors

Constructor	Description
JDTJavaCompiler()

Method Summary

Modifier and Type	Method	Description
JavacErrorDetail[]	compile(java.lang.String targetClassName, Node.Nodes pageNodes)	Start Java compilation
void	doJavaFile(boolean keep)	Remove/save the generated Java File from/to disk
long	getClassLastModified()	Return the time the class file was generated.
java.io.Writer	getJavaWriter(java.lang.String javaFileName, java.lang.String javaEncoding)	Get a Writer for the Java file.
void	init(JspCompilationContext ctxt, ErrorDispatcher errDispatcher, boolean suppressLogging)	Initializations
void	release()	Release resouces used in the current compilation
private static org.eclipse.jdt.core.compiler.IProblem[]	safeGetProblems(org.eclipse.jdt.internal.compiler.CompilationResult result)	Invoke CompilationResult#getProblems safely so that it works with 3.1.1 and more recent versions of the eclipse java compiler.
void	saveClassFile(java.lang.String className, java.lang.String classFileName)	Save the generated class file to disk, if not already done.
void	setClassPath(java.util.List<java.io.File> cpath)	Java Compiler options.
void	setDebug(boolean debug)
void	setExtdirs(java.lang.String exts)
void	setSourceVM(java.lang.String sourceVM)
void	setTargetVM(java.lang.String targetVM)

Methods inherited from class java.lang.Object

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

Field Detail

settings

private final java.util.Map settings

ctxt

private JspCompilationContext ctxt

errDispatcher

private ErrorDispatcher errDispatcher

log

private java.util.logging.Logger log

javaFileName

private java.lang.String javaFileName

USE_INTROSPECTION_TO_INVOKE_GET_PROBLEM

private static boolean USE_INTROSPECTION_TO_INVOKE_GET_PROBLEM

GET_PROBLEM_METH

private static java.lang.reflect.Method GET_PROBLEM_METH

Constructor Detail

JDTJavaCompiler

public JDTJavaCompiler()

Method Detail

init

public void init(JspCompilationContext ctxt,
                 ErrorDispatcher errDispatcher,
                 boolean suppressLogging)

Description copied from interface: JavaCompiler

Initializations

Specified by:

init in interface JavaCompiler

release

public void release()

Description copied from interface: JavaCompiler

Release resouces used in the current compilation

Specified by:

release in interface JavaCompiler

setExtdirs

public void setExtdirs(java.lang.String exts)

Specified by:

setExtdirs in interface JavaCompiler

setClassPath

public void setClassPath(java.util.List<java.io.File> cpath)

Description copied from interface: JavaCompiler

Java Compiler options.

Specified by:

setClassPath in interface JavaCompiler

getClassLastModified

public long getClassLastModified()

Description copied from interface: JavaCompiler

Return the time the class file was generated.

Specified by:

getClassLastModified in interface JavaCompiler

getJavaWriter

public java.io.Writer getJavaWriter(java.lang.String javaFileName,
                                    java.lang.String javaEncoding)
                             throws JasperException

Description copied from interface: JavaCompiler

Get a Writer for the Java file. The writer is used by JSP compiler. This method allows the Java compiler control where the Java file should be generated so it knows how to handle the input for java compilation accordingly.

Specified by:

getJavaWriter in interface JavaCompiler

Throws:

JasperException

setDebug

public void setDebug(boolean debug)

Specified by:

setDebug in interface JavaCompiler

setSourceVM

public void setSourceVM(java.lang.String sourceVM)

Specified by:

setSourceVM in interface JavaCompiler

setTargetVM

public void setTargetVM(java.lang.String targetVM)

Specified by:

setTargetVM in interface JavaCompiler

saveClassFile

public void saveClassFile(java.lang.String className,
                          java.lang.String classFileName)

Description copied from interface: JavaCompiler

Save the generated class file to disk, if not already done.

Specified by:

saveClassFile in interface JavaCompiler

doJavaFile

public void doJavaFile(boolean keep)

Description copied from interface: JavaCompiler

Remove/save the generated Java File from/to disk

Specified by:

doJavaFile in interface JavaCompiler

compile

public JavacErrorDetail[] compile(java.lang.String targetClassName,
                                  Node.Nodes pageNodes)
                           throws JasperException

Description copied from interface: JavaCompiler

Start Java compilation

Specified by:

compile in interface JavaCompiler

Parameters:

targetClassName - Name of the class under compilation

Throws:

JasperException

safeGetProblems

private static final org.eclipse.jdt.core.compiler.IProblem[] safeGetProblems(org.eclipse.jdt.internal.compiler.CompilationResult result)

Invoke CompilationResult#getProblems safely so that it works with 3.1.1 and more recent versions of the eclipse java compiler. See https://jsp.dev.java.net/issues/show_bug.cgi?id=13

Parameters:

result - The compilation result.

Returns:

The same object than CompilationResult#getProblems