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

Author:

Teodor Danciu ([email protected])

Field Summary

Fields

Modifier and Type	Field and Description
static String	EXCEPTION_MESSAGE_KEY_EXPECTED_JAVA_LANGUAGE
static String	EXCEPTION_MESSAGE_KEY_EXPRESSION_CLASS_NOT_LOADED
static 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 class net.sf.jasperreports.engine.design.JRAbstractCompiler

EXCEPTION_MESSAGE_KEY_CROSSTAB_ID_NOT_FOUND, EXCEPTION_MESSAGE_KEY_DESIGN_COMPILE_ERROR, EXCEPTION_MESSAGE_KEY_LANGUAGE_NOT_SUPPORTED, EXCEPTION_MESSAGE_KEY_REPORT_EXPRESSIONS_COMPILE_ERROR, EXCEPTION_MESSAGE_KEY_TEMP_DIR_NOT_FOUND, jasperReportsContext, reportClassFilter

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

COMPILER_CLASS, COMPILER_CLASSPATH, COMPILER_KEEP_JAVA_FILE, COMPILER_PREFIX, COMPILER_TEMP_DIR

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JRAbstractJavaCompiler(JasperReportsContext jasperReportsContext, boolean needsSourceFiles)

Method Summary

Modifier and Type	Method and Description
protected static Object	classCacheKey()
protected DirectExpressionValueFilter	directValueFilter()
protected static Class<?>	getClassFromCache(String className)
protected Class<?>	loadClass(String className, byte[] compileData)
protected Class<?>	loadClass(String className, CompiledClasses classes)
protected JREvaluator	loadEvaluator(Serializable compileData, String className) Creates an expression evaluator instance from data saved when the report was compiled.
protected static void	putClassInCache(String className, Class<?> loadedClass)
protected CompiledClasses	toCompiledClasses(String className, Serializable compileData)

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

checkLanguage, compileReport, compileUnits, createCompileData, createEvaluator, effectiveDirectValueFilter, generateSourceCode, getCompilerClass, getSourceFile, 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 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

EXCEPTION_MESSAGE_KEY_EXPECTED_JAVA_LANGUAGE

public static final String EXCEPTION_MESSAGE_KEY_EXPECTED_JAVA_LANGUAGE

See Also:

Constant Field Values

EXCEPTION_MESSAGE_KEY_EXPRESSION_CLASS_NOT_LOADED

public static final String EXCEPTION_MESSAGE_KEY_EXPRESSION_CLASS_NOT_LOADED

See Also:

Constant Field Values

Constructor Detail

JRAbstractJavaCompiler

protected JRAbstractJavaCompiler(JasperReportsContext jasperReportsContext,
                                 boolean needsSourceFiles)

Method Detail

directValueFilter

protected DirectExpressionValueFilter directValueFilter()

Overrides:

directValueFilter in class JRAbstractCompiler

loadEvaluator

protected JREvaluator loadEvaluator(Serializable compileData,
                                    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

toCompiledClasses

protected CompiledClasses toCompiledClasses(String className,
                                            Serializable compileData)

loadClass

protected Class<?> loadClass(String className,
                             byte[] compileData)

loadClass

protected Class<?> loadClass(String className,
                             CompiledClasses classes)

classCacheKey

protected static Object classCacheKey()

getClassFromCache

protected static Class<?> getClassFromCache(String className)

putClassInCache

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