net.sf.jasperreports.compilers

Class JavaScriptEvaluator

java.lang.Object

net.sf.jasperreports.engine.fill.JREvaluator

net.sf.jasperreports.compilers.JavaScriptEvaluator

All Implemented Interfaces:

DatasetExpressionEvaluator

public class JavaScriptEvaluator
extends JREvaluator

JavaScript expression evaluator.

Version:

$Id: JavaScriptEvaluator.java 3717 2010-04-09 10:01:33Z teodord $

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JavaScriptEvaluator.JSField Field class used in JavaScript expressions.
static class	JavaScriptEvaluator.JSParameter Parameter class used in JavaScript expressions.
static class	JavaScriptEvaluator.JSValue Base JavaScript value class.
static class	JavaScriptEvaluator.JSVariable Variable class used in JavaScript expressions.

Constructor Summary

Constructors

Constructor and Description
JavaScriptEvaluator(JavaScriptCompileData compileData) Create a JavaScript expression evaluator.

Method Summary

Methods

Modifier and Type	Method and Description
protected static JavaScriptCompileData.Expression	createJSExpression(JRExpression expression)
protected void	customizedInit(java.util.Map parametersMap, java.util.Map fieldsMap, java.util.Map variablesMap) Initializes the parameters, fields and variables of the evaluator.
protected java.lang.Object	evaluate(int id) Evaluates an expression using current fields and variables values.
protected java.lang.Object	evaluateEstimated(int id) Evaluates an expression using estimated variables values.
protected java.lang.Object	evaluateExpression(java.lang.String type, java.lang.String expression)
protected java.lang.Object	evaluateOld(int id) Evaluates an expression using old fields and variables values.
protected Script	getCompiledExpression(java.lang.String expression)
protected JavaScriptCompileData.Expression	getExpression(int id)
protected static java.lang.String	getFieldVar(java.lang.String name)
protected static java.lang.String	getParameterVar(java.lang.String name)
protected java.lang.Class	getTypeClass(java.lang.String type)
protected static java.lang.String	getVariableVar(java.lang.String name)

Methods inherited from class net.sf.jasperreports.engine.fill.JREvaluator

evaluate, evaluateEstimated, evaluateOld, handleMissingResource, init, msg, msg, msg, msg, str

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaScriptEvaluator

public JavaScriptEvaluator(JavaScriptCompileData compileData)

Create a JavaScript expression evaluator.

Parameters:

compileData - the report compile data

Method Detail

createJSExpression

protected static JavaScriptCompileData.Expression createJSExpression(JRExpression expression)

getParameterVar

protected static java.lang.String getParameterVar(java.lang.String name)

getVariableVar

protected static java.lang.String getVariableVar(java.lang.String name)

getFieldVar

protected static java.lang.String getFieldVar(java.lang.String name)

customizedInit

protected void customizedInit(java.util.Map parametersMap,
                  java.util.Map fieldsMap,
                  java.util.Map variablesMap)
                       throws JRException

Description copied from class: JREvaluator

Initializes the parameters, fields and variables of the evaluator.

Specified by:

customizedInit in class JREvaluator

Parameters:

parametersMap - the parameters indexed by name

fieldsMap - the fields indexed by name

variablesMap - the variables indexed by name

Throws:

JRException

evaluate

protected java.lang.Object evaluate(int id)
                             throws java.lang.Throwable

Description copied from class: JREvaluator

Evaluates an expression using current fields and variables values.

Specified by:

evaluate in class JREvaluator

Parameters:

id - the expression id

Returns:

the result of the evaluation

Throws:

java.lang.Throwable

See Also:

JRExpression.EVALUATION_DEFAULT, JRFillVariable.getValue(), JRFillField.getValue()

evaluateEstimated

protected java.lang.Object evaluateEstimated(int id)
                                      throws java.lang.Throwable

Description copied from class: JREvaluator

Evaluates an expression using estimated variables values.

Specified by:

evaluateEstimated in class JREvaluator

Parameters:

id - the expression id

Returns:

the result of the evaluation

Throws:

java.lang.Throwable

See Also:

JRExpression.EVALUATION_ESTIMATED, JRFillVariable.getEstimatedValue()

evaluateOld

protected java.lang.Object evaluateOld(int id)
                                throws java.lang.Throwable

Description copied from class: JREvaluator

Evaluates an expression using old fields and variables values.

Specified by:

evaluateOld in class JREvaluator

Parameters:

id - the expression id

Returns:

the result of the evaluation

Throws:

java.lang.Throwable

See Also:

JRExpression.EVALUATION_OLD, JRFillVariable.getOldValue(), JRFillField.getOldValue()

getExpression

protected JavaScriptCompileData.Expression getExpression(int id)

evaluateExpression

protected java.lang.Object evaluateExpression(java.lang.String type,
                                  java.lang.String expression)

getCompiledExpression

protected Script getCompiledExpression(java.lang.String expression)

getTypeClass

protected java.lang.Class getTypeClass(java.lang.String type)