Examples of de.odysseus.el.ExpressionFactoryImpl

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

{
    private static final long serialVersionUID = 2641255245468004320L;


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

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

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        return getExpressionFactory();
    }


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

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        return getExpressionFactory();
    }


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

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    /** 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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{
    private static final long serialVersionUID = 2641255245468004320L;


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

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

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 */
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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        return getExpressionFactory();
    }


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

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        return getExpressionFactory();
    }


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

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com.opengamma.financial.expression.ELExpressionParser

de.odysseus.el.samples.calculator.Calculator

de.odysseus.el.samples.experimental.SyntaxExtension

de.odysseus.el.samples.extensions.MethodInvocations

de.odysseus.el.samples.extensions.NullProperties

de.odysseus.el.samples.extensions.VarArgs

de.odysseus.el.tree.impl.Builder

de.odysseus.el.tree.impl.Cache

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de.odysseus.el.tree.TreeStore

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