JRAbstractJavaCompiler (JasperReports Javadoc 7.0.0 API)

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 (teodord@users.sourceforge.net)

Field Summary

Fields
Modifier and Type	Field	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 Description

protected JRAbstractJavaCompiler(JasperReportsContext jasperReportsContext, boolean needsSourceFiles)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	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)