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Java Source Code / Java Documentation » Library » Apache commons jexl 1.1 src » org.apache.commons.jexl

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.apache.commons.jexl .ScriptFactory

ScriptFactory

public class ScriptFactory (Code)

Creates Script s. To create a JEXL Script, pass valid JEXL syntax to the static createScript() method:

 String jexl = "y = x * 12 + 44; y = y * 4;";
 Script script = ScriptFactory.createScript( jexl );

When an Script is created, the JEXL syntax is parsed and verified.

since:
1.1
version:
$Id: ScriptFactory.java 429175 2006-08-06 19:05:23Z rahul $

Field Summary
protected static ScriptFactory	factory ScriptFactory is a singleton and this is the private instance fufilling that pattern.
protected static Log	log The Log to which all ScriptFactory messages will be logged.
protected static Parser	parser The singleton ScriptFactory also holds a single instance of Parser .

Method Summary
protected Script	createNewScript(String scriptText) Creates a new Script based on the string.
public static Script	createScript(String scriptText) Creates a Script from a String containing valid JEXL syntax.
public static Script	createScript(File scriptFile) Creates a Script from a File containing valid JEXL syntax.
public static Script	createScript(URL scriptUrl) Creates a Script from a URL containing valid JEXL syntax.
protected static ScriptFactory	getInstance() Returns the single instance of ScriptFactory.

Field Detail

factory
protected static ScriptFactory factory(Code)
	ScriptFactory is a singleton and this is the private instance fufilling that pattern.

log
protected static Log log(Code)
	The Log to which all ScriptFactory messages will be logged.

parser
protected static Parser parser(Code)
	The singleton ScriptFactory also holds a single instance of Parser . When parsing expressions, ScriptFactory synchronizes on Parser.

Method Detail

createNewScript
protected Script createNewScript(String scriptText) throws Exception(Code)
	Creates a new Script based on the string. Parameters: scriptText - valid Jexl script Script a new script throws: Exception - for a variety of reasons - mostly malformed scripts

createScript
public static Script createScript(String scriptText) throws Exception(Code)
	Creates a Script from a String containing valid JEXL syntax. This method parses the script which validates the syntax. Parameters: scriptText - A String containing valid JEXL syntax A Script which can be executed with a JexlContext. throws: Exception - An exception can be thrown if there is a problem parsing the script.

createScript
public static Script createScript(File scriptFile) throws Exception(Code)
	Creates a Script from a File containing valid JEXL syntax. This method parses the script and validates the syntax. Parameters: scriptFile - A File containing valid JEXL syntax.Must not be null. Must be a readable file. A Script which can be executed with a JexlContext. throws: Exception - An exception can be thrown if there is a problem parsing the script.

createScript
public static Script createScript(URL scriptUrl) throws Exception(Code)
	Creates a Script from a URL containing valid JEXL syntax. This method parses the script and validates the syntax. Parameters: scriptUrl - A URL containing valid JEXL syntax.Must not be null. Must be a readable file. A Script which can be executed with a JexlContext. throws: Exception - An exception can be thrown if there is a problemparsing the script.

getInstance
protected static ScriptFactory getInstance()(Code)
	Returns the single instance of ScriptFactory. the instance of ScriptFactory.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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