net.sf.jasperreports.engine.design
Class JRAbstractJavaCompiler

java.lang.Object
  net.sf.jasperreports.engine.design.JRAbstractCompiler
      net.sf.jasperreports.engine.design.JRAbstractJavaCompiler

All Implemented Interfaces:

JRCompiler

Direct Known Subclasses:

JRAbstractClassCompiler, JRGroovyCompiler, JRJdtCompiler

public abstract class JRAbstractJavaCompiler
extends JRAbstractCompiler

Version:

$Id: JRAbstractJavaCompiler.java 4595 2011-09-08 15:55:10Z teodord $

Author:

Teodor Danciu ([email protected])

Field Summary

static java.lang.String

PROPERTY_EVALUATOR_CLASS_REFERENCE_FIX_ENABLED Property that indicates whether a legacy fix for a JVM issue related to evaluator classes generated by JasperReports is enabled.

Fields inherited from interface net.sf.jasperreports.engine.design.JRCompiler

COMPILER_PREFIX

Constructor Summary

protected

JRAbstractJavaCompiler(boolean needsSourceFiles)

Method Summary

protected static java.lang.Object	classCacheKey()
protected static java.lang.Class<?>	getClassFromCache(java.lang.String className)
protected JREvaluator	loadEvaluator(java.io.Serializable compileData, java.lang.String className) Creates an expression evaluator instance from data saved when the report was compiled.
protected static void	putClassInCache(java.lang.String className, java.lang.Class<?> loadedClass)

Methods inherited from class net.sf.jasperreports.engine.design.JRAbstractCompiler

checkLanguage, compileReport, compileUnits, generateSourceCode, getCompilerClass, getSourceFileName, getUnitName, getUnitName, getUnitName, getUnitName, getUnitName, loadEvaluator, loadEvaluator, loadEvaluator

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_EVALUATOR_CLASS_REFERENCE_FIX_ENABLED

public static final java.lang.String PROPERTY_EVALUATOR_CLASS_REFERENCE_FIX_ENABLED

Property that indicates whether a legacy fix for a JVM issue related to evaluator classes generated by JasperReports is enabled. The fix is enabled by default. Due to the fix, the garbage collector might not be able to collect a classloader that loaded JasperReports classes. This would be inconvenient in scenarios in which JasperReports classes are repeatedly loaded by different classloaders, e.g. when JasperReports is part of the classpath of a web application which is often reloaded. In such scenarios, set this property to false.

See Also:

Constant Field Values

Constructor Detail

JRAbstractJavaCompiler

protected JRAbstractJavaCompiler(boolean needsSourceFiles)

Method Detail

loadEvaluator

protected JREvaluator loadEvaluator(java.io.Serializable compileData,
                                    java.lang.String className)
                             throws JRException

Description copied from class: JRAbstractCompiler

Creates an expression evaluator instance from data saved when the report was compiled.

Specified by:

loadEvaluator in class JRAbstractCompiler

Parameters:

compileData - the data saved when the report was compiled

className - the evaluator unit name

Returns:

an expression evaluator instance

Throws:

JRException

classCacheKey

protected static java.lang.Object classCacheKey()

getClassFromCache

protected static java.lang.Class<?> getClassFromCache(java.lang.String className)

putClassInCache

protected static void putClassInCache(java.lang.String className,
                                      java.lang.Class<?> loadedClass)