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java.lang.Objectjavax.script.AbstractScriptEngine
org.apache.commons.jexl2.scripting.JexlScriptEngine
public class JexlScriptEngine
Implements the Jexl ScriptEngine for JSF-223.
This implementation gives access to both ENGINE_SCOPE and GLOBAL_SCOPE bindings. When a JEXL script accesses a variable for read or write, this implementation checks first ENGINE and then GLOBAL scope. The first one found is used. If no variable is found, and the JEXL script is writing to a variable, it will be stored in the ENGINE scope.
The implementation also creates the "JEXL" script object as an instance of the
class JexlScriptEngine.JexlScriptObject
for access to utility methods and variables.
Nested Class Summary | |
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class |
JexlScriptEngine.JexlScriptObject
Implements engine and engine context properties for use by JEXL scripts. |
Field Summary | |
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static java.lang.String |
CONTEXT_KEY
Reserved key for context (mandated by JSR-223). |
static java.lang.String |
JEXL_OBJECT_KEY
Reserved key for JexlScriptObject. |
Fields inherited from class javax.script.AbstractScriptEngine |
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context |
Fields inherited from interface javax.script.ScriptEngine |
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ARGV, ENGINE, ENGINE_VERSION, FILENAME, LANGUAGE, LANGUAGE_VERSION, NAME |
Constructor Summary | |
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JexlScriptEngine()
Default constructor. |
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JexlScriptEngine(javax.script.ScriptEngineFactory factory)
Create a scripting engine using the supplied factory. |
Method Summary | |
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javax.script.CompiledScript |
compile(java.io.Reader script)
|
javax.script.CompiledScript |
compile(java.lang.String script)
|
javax.script.Bindings |
createBindings()
|
java.lang.Object |
eval(java.io.Reader reader,
javax.script.ScriptContext context)
|
java.lang.Object |
eval(java.lang.String script,
javax.script.ScriptContext context)
|
javax.script.ScriptEngineFactory |
getFactory()
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Methods inherited from class javax.script.AbstractScriptEngine |
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eval, eval, eval, eval, get, getBindings, getContext, getScriptContext, put, setBindings, setContext |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String CONTEXT_KEY
public static final java.lang.String JEXL_OBJECT_KEY
Constructor Detail |
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public JexlScriptEngine()
Only intended for use when not using a factory.
Sets the factory to JexlScriptEngineFactory
.
public JexlScriptEngine(javax.script.ScriptEngineFactory factory)
factory
- the factory which created this instance.
java.lang.NullPointerException
- if factory is nullMethod Detail |
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public javax.script.Bindings createBindings()
createBindings
in interface javax.script.ScriptEngine
public java.lang.Object eval(java.io.Reader reader, javax.script.ScriptContext context) throws javax.script.ScriptException
eval
in interface javax.script.ScriptEngine
javax.script.ScriptException
public java.lang.Object eval(java.lang.String script, javax.script.ScriptContext context) throws javax.script.ScriptException
eval
in interface javax.script.ScriptEngine
javax.script.ScriptException
public javax.script.ScriptEngineFactory getFactory()
getFactory
in interface javax.script.ScriptEngine
public javax.script.CompiledScript compile(java.lang.String script) throws javax.script.ScriptException
compile
in interface javax.script.Compilable
javax.script.ScriptException
public javax.script.CompiledScript compile(java.io.Reader script) throws javax.script.ScriptException
compile
in interface javax.script.Compilable
javax.script.ScriptException
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