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java.lang.Object | +--org.apache.commons.jexl.ScriptFactory
Creates Scripts. 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.
| 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. |
static Script |
createScript(File scriptFile)
Creates a Script from a File containing valid JEXL syntax. |
static Script |
createScript(String scriptText)
Creates a Script from a String containing valid JEXL syntax. |
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. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
protected static Log log
protected static Parser parser
Parser. When parsing expressions, ScriptFactory
synchronizes on Parser.protected static ScriptFactory factory
| Method Detail |
protected static ScriptFactory getInstance()
public static Script createScript(String scriptText)
throws Exception
scriptText - A String containing valid JEXL syntaxScript which can be executed with a
JexlContext.Exception - An exception can be thrown if there is a
problem parsing the script.
public static Script createScript(File scriptFile)
throws Exception
File containing valid JEXL syntax.
This method parses the script and validates the syntax.scriptFile - A File containing valid JEXL syntax.
Must not be null. Must be a readable file.Script which can be executed with a
JexlContext.Exception - An exception can be thrown if there is a problem
parsing the script.
public static Script createScript(URL scriptUrl)
throws Exception
URL containing valid JEXL syntax.
This method parses the script and validates the syntax.scriptUrl - A URL containing valid JEXL syntax.
Must not be null. Must be a readable file.Script which can be executed with a
JexlContext.Exception - An exception can be thrown if there is a problem
parsing the script.
protected Script createNewScript(String scriptText)
throws Exception
scriptText - valid Jexl scriptException - for a variety of reasons - mostly malformed scripts
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