Examples of ExpressionFactoryImpl

com.caucho.el.ExpressionFactoryImpl
com.exigen.ie.constrainer.impl.ExpressionFactoryImpl
A generic implementation of the ExpressionFactory interface.
de.odysseus.el.ExpressionFactoryImpl
Expression factory implementation. This class is also used as an EL "service provider". The JUEL jar file specifies this class as el expression factory implementation in META-INF/services/javax.el.ExpressionFactory. Calling {@link ExpressionFactory#newInstance()} will then returnan instance of this class, configured as described below. The default constructor loads properties from resources
1. JAVA_HOME/lib/el.properties - If this file exists and if it contains property javax.el.ExpressionFactory whose value is the name of this class, these properties are taken as default properties.
2. el.properties on your classpath. These properties override the properties from JAVA_HOME/lib/el.properties.
There's also a constructor to explicitly pass in an instance of {@link Properties}. Having this, the following properties are read:
- javax.el.cacheSize - cache size (int, default is 1000)
- javax.el.methodInvocations - allow method invocations as in ${foo.bar(baz)} (boolean, default is false).
- javax.el.nullProperties - resolve null properties as in ${foo[null]} (boolean, default is false).
- javax.el.varArgs - support function/method calls using varargs (boolean, default is false).
@author Christoph Beck
org.activiti.engine.impl.juel.ExpressionFactoryImpl
Expression factory implementation. This class is also used as an EL "service provider". The JUEL jar file specifies this class as el expression factory implementation in META-INF/services/javax.el.ExpressionFactory. Calling {@link ExpressionFactory#newInstance()} will then return an instance of this class, configured asdescribed below. If no properties are specified at construction time, properties are read from
1. If the file JAVA_HOME/lib/el.properties exists and if it contains property javax.el.ExpressionFactory whose value is the name of this class, these properties are taken as default properties.
2. Otherwise, if system property javax.el.ExpressionFactory is set to the name of this class, the system properties {@link System#getProperties()} are taken as default properties.
3. el.properties on your classpath. These properties override the properties from JAVA_HOME/lib/el.properties or {@link System#getProperties()}.
There are also constructors to explicitly pass in an instance of {@link Properties}. Having this, the following properties are read:
- javax.el.cacheSize - cache size (int, default is 1000)
- javax.el.methodInvocations - allow method invocations as in ${foo.bar(baz)} (boolean, default is false).
- javax.el.nullProperties - resolve null properties as in ${foo[null]} (boolean, default is false).
- javax.el.varArgs - support function/method calls using varargs (boolean, default is false).
@author Christoph Beck
org.apache.el.ExpressionFactoryImpl
@see javax.el.ExpressionFactory @author Jacob Hookom [jacob@hookom.net] @version $Id: ExpressionFactoryImpl.java 939519 2010-04-30 00:12:23Z kkolinko $
org.camunda.bpm.engine.impl.juel.ExpressionFactoryImpl
Expression factory implementation. This class is also used as an EL "service provider". The JUEL jar file specifies this class as el expression factory implementation in META-INF/services/javax.el.ExpressionFactory. Calling {@link ExpressionFactory#newInstance()} will then return an instance of this class, configured asdescribed below. If no properties are specified at construction time, properties are read from
1. If the file JAVA_HOME/lib/el.properties exists and if it contains property javax.el.ExpressionFactory whose value is the name of this class, these properties are taken as default properties.
2. Otherwise, if system property javax.el.ExpressionFactory is set to the name of this class, the system properties {@link System#getProperties()} are taken as default properties.
3. el.properties on your classpath. These properties override the properties from JAVA_HOME/lib/el.properties or {@link System#getProperties()}.
There are also constructors to explicitly pass in an instance of {@link Properties}. Having this, the following properties are read:
- javax.el.cacheSize - cache size (int, default is 1000)
- javax.el.methodInvocations - allow method invocations as in ${foo.bar(baz)} (boolean, default is false).
- javax.el.nullProperties - resolve null properties as in ${foo[null]} (boolean, default is false).
- javax.el.varArgs - support function/method calls using varargs (boolean, default is false).
@author Christoph Beck
org.jboss.el.ExpressionFactoryImpl
@see javax.el.ExpressionFactory @author Jacob Hookom [jacob@hookom.net] @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: markt $

Examples of de.odysseus.el.ExpressionFactoryImpl

 */
public class NullProperties {
  public static void main(String... args) throws NoSuchMethodException {
    // create our factory which uses our customized builder
    System.setProperty("javax.el.nullProperties", "true");    
    ExpressionFactory f = new ExpressionFactoryImpl(System.getProperties());


    // create our context
    ELContext context = new SimpleContext();


    // create our expression we want to evaluate
    ValueExpression e = f.createValueExpression(context, "${map[null]}", String.class);


    // create a map containing a value for key <code>null</code> and make it available
    Map<String, String> map = new HashMap<String, String>();
    map.put(null, "foo");
    context.getELResolver().setValue(context, null, "map", map);

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Examples of de.odysseus.el.ExpressionFactoryImpl

  }
  
  
  private ExpressionFactory newExpressionFactory(CacheProvider cacheProvider) {
    TreeStore store = new TreeStore(new Builder(), createTreeCache(cacheProvider));
    return new ExpressionFactoryImpl(store, typeConverter);
  }

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Examples of de.odysseus.el.ExpressionFactoryImpl

{
    private static final long serialVersionUID = 2641255245468004320L;


    public ExpressionFactory createExpressionFactory()
    {
        return new ExpressionFactoryImpl();
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

 */
class TestELProvider implements ELProvider
{
    public ExpressionFactory createExpressionFactory()
    {
        return new ExpressionFactoryImpl();
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

        return getExpressionFactory();
    }


    public ExpressionFactory getExpressionFactory() {
        if (expressionFactory == null) {
            expressionFactory = new ExpressionFactoryImpl();
        }
        return expressionFactory;
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

        return getExpressionFactory();
    }


    public ExpressionFactory getExpressionFactory() {
        if (expressionFactory == null) {
            expressionFactory = new ExpressionFactoryImpl();
        }
        return expressionFactory;
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl


    /** Returns an <code>ExpressionFactory</code> instance.
     * @return A customized <code>ExpressionFactory</code> instance
     */
    public static ExpressionFactory newExpressionFactory() {
        return new ExpressionFactoryImpl(new TreeStore(new ExtendedBuilder(), new Cache(1000)));
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

{
    private static final long serialVersionUID = 2641255245468004320L;


    public ExpressionFactory createExpressionFactory()
    {
        return new ExpressionFactoryImpl();
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

 */
class TestELProvider implements ELProvider
{
    public ExpressionFactory createExpressionFactory()
    {
        return new ExpressionFactoryImpl();
    }

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Examples of de.odysseus.el.ExpressionFactoryImpl

 */
public class JuelTest extends Assert {


    @Test
    public void testJuel() throws Exception {
        ExpressionFactory factory = new ExpressionFactoryImpl();
        ELContext context  = new SimpleContext();
        ValueExpression valueExpression = factory.createValueExpression(context, "${123 * 2}", Object.class);
        Object value = valueExpression.getValue(context);


        assertEquals("Result is a Long object", 246L, value);
    }

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