Examples of ExpressionFactory

com.avaje.ebean.ExpressionFactory
ple: fetch orders where status equals new or orderDate > lastWeek. Expression newOrLastWeek = Expr.or(Expr.eq("status", Order.Status.NEW), Expr.gt("orderDate", lastWeek)); Query<Order> query = Ebean.createQuery(Order.class); query.where().add(newOrLastWeek); List<Order> list = query.findList(); ... @see Query#where()
com.exigen.ie.constrainer.ExpressionFactory
An interface for the expression factory.
com.volantis.xml.expression.ExpressionFactory
A class for creating expression specific objects.
Note: it is not possible to pass a null value to the overloaded {@link #createSequence} functions without an explicitcast. However, it is better to use {@link Sequence.EMPTY} to obtain anempty sequence. The same issue exists for the methods {@link #createDateTimeValue}, {@link #createDateValue} and {@link #createTimeValue}.

Warning: This is a facade provided for use by user code, not for implementation in user code. User implementations of this interface are highly likely to be incompatible with future releases of the product at both binary and source levels.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI @mock.generate
javax.el.ExpressionFactory
Parses a String into a {@link ValueExpression} or {@link MethodExpression} instance for laterevaluation. Classes that implement the EL expression language expose their functionality via this abstract class. There is no concrete implementation of this API available in this package. Technologies such as JavaServer Pages and JavaServer Faces provide access to an implementation via factory methods. The {@link #createValueExpression(ELContext,String,Class)} method is usedto parse expressions that evaluate to values (both l-values and r-values are supported). The {@link #createMethodExpression(ELContext,String,Class,Class[])} method is used to parseexpressions that evaluate to a reference to a method on an object. Unlike previous incarnations of this API, there is no way to parse and evaluate an expression in one single step. The expression needs to first be parsed, and then evaluated. Resolution of model objects is performed at evaluation time, via the {@link ELResolver} associated with the {@link ELContext} passed tothe ValueExpression or MethodExpression. The ELContext object also provides access to the {@link FunctionMapper} and {@link VariableMapper} to be used when parsing the expression. ELfunction and variable mapping is performed at parse-time, and the results are bound to the expression. Therefore, the {@link ELContext}, {@link FunctionMapper}, and {@link VariableMapper}are not stored for future use and do not have to be Serializable. The createValueExpression and createMethodExpression methods must be thread-safe. That is, multiple threads may call these methods on the same ExpressionFactory object simultaneously. Implementations should synchronize access if they depend on transient state. Implementations should not, however, assume that only one object of each ExpressionFactory type will be instantiated; global caching should therefore be static. The ExpressionFactory must be able to handle the following types of input for the expression parameter:
- Single expressions using the ${} delimiter (e.g. "${employee.lastName}").
- Single expressions using the #{} delimiter (e.g. "#{employee.lastName}").
- Literal text containing no ${} or #{} delimiters (e.g. "John Doe").
- Multiple expressions using the same delimiter (e.g.
- Mixed literal text and expressions using the same delimiter (e.g. "Name: ${employee.firstName} ${employee.lastName}").
The following types of input are illegal and must cause an {@link ELException} to be thrown:
- Multiple expressions using different delimiters (e.g. "${employee.firstName}#{employee.lastName}").
- Mixed literal text and expressions using different delimiters(e.g. "Name: ${employee.firstName} #{employee.lastName}").
org.apache.cocoon.el.ExpressionFactory
@version $Id: ExpressionFactory.java 587751 2007-10-24 02:41:36Z vgritsenko $
org.apache.commons.jelly.expression.ExpressionFactory

ExpressionFactory is a factory of Expression objects.
@author James Strachan @version $Revision: 1.3 $
org.apache.openjpa.kernel.exps.ExpressionFactory
The ExpressionFactory must be implemented by a particular runtime to form {@link Expression}s in its native query language. @author Abe White @nojavadoc

Examples of javax.el.ExpressionFactory

  public static Object proprietaryEvaluate(final String expression,
      final Class expectedType, final PageContext pageContext,
      final ProtectedFunctionMapper functionMap, final boolean escape)
      throws ELException {
    Object retValue;
        final ExpressionFactory exprFactory = jspf.getJspApplicationContext(pageContext.getServletContext()).getExpressionFactory();
    if (SecurityUtil.isPackageProtectionEnabled()) {
      try {
        retValue = AccessController
            .doPrivileged(new PrivilegedExceptionAction() {


              public Object run() throws Exception {
                                ELContextImpl ctx = (ELContextImpl) pageContext.getELContext();
                                ctx.setFunctionMapper(new FunctionMapperImpl(functionMap));
                ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
                                return ve.getValue(ctx);
              }
            });
      } catch (PrivilegedActionException ex) {
        Exception realEx = ex.getException();
        if (realEx instanceof ELException) {
          throw (ELException) realEx;
        } else {
          throw new ELException(realEx);
        }
      }
    } else {
            ELContextImpl ctx = (ELContextImpl) pageContext.getELContext();
            ctx.setFunctionMapper(new FunctionMapperImpl(functionMap));
            ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
            retValue = ve.getValue(ctx);
    }
    if (escape && retValue != null) {
      retValue = XmlEscape(retValue.toString());
    }

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Examples of javax.el.ExpressionFactory

    {
        if (value == null) return null;


        try
        {
            ExpressionFactory expFactory = FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
            return expFactory.coerceToType(value, desiredClass);
        }
        catch (Exception e)
        {
            String message = "Cannot coerce " + value.getClass().getName()
                             + " to " + desiredClass.getName();

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Examples of javax.el.ExpressionFactory

    {
        if (value == null) return null;


        try
        {
            ExpressionFactory expFactory = FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
            return expFactory.coerceToType(value, desiredClass);
        }
        catch (Exception e)
        {
            String message = "Cannot coerce " + value.getClass().getName()
                             + " to " + desiredClass.getName();

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Examples of javax.el.ExpressionFactory

    public static Object proprietaryEvaluate(final String expression,
            final Class expectedType, final PageContext pageContext,
            final ProtectedFunctionMapper functionMap, final boolean escape)
            throws ELException {
        Object retValue;
        final ExpressionFactory exprFactory = jspf.getJspApplicationContext(pageContext.getServletContext()).getExpressionFactory();
        if (SecurityUtil.isPackageProtectionEnabled()) {
            try {
                retValue = AccessController
                        .doPrivileged(new PrivilegedExceptionAction() {


                            public Object run() throws Exception {
                                ELContextImpl ctx = (ELContextImpl) pageContext.getELContext();
                                ctx.setFunctionMapper(new FunctionMapperImpl(functionMap));
                                ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
                                return ve.getValue(ctx);
                            }
                        });
            } catch (PrivilegedActionException ex) {
                Exception realEx = ex.getException();
                if (realEx instanceof ELException) {
                    throw (ELException) realEx;
                } else {
                    throw new ELException(realEx);
                }
            }
        } else {
            ELContextImpl ctx = (ELContextImpl) pageContext.getELContext();
            ctx.setFunctionMapper(new FunctionMapperImpl(functionMap));
            ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
            retValue = ve.getValue(ctx);
        }
        if (escape && retValue != null) {
            retValue = XmlEscape(retValue.toString());
        }

View Full Code Here

Examples of javax.el.ExpressionFactory

 * @version $Revision: $
 */
public class JuelTest extends TestCase {


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


        System.out.println("Found: " + value + " for expression: " + valueExpression);
    }

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Examples of javax.el.ExpressionFactory

                // beacuse type we have objValue already


                //   Coerce the value of the "value" expression to
                // the "target" expression value type following the Expression
                // Language coercion rules. 
                ExpressionFactory expressionFactory = facesContext.getApplication().getExpressionFactory();
                value = expressionFactory.coerceToType(value, targetType);
            }


            // Call setValue()on the "target" ValueExpression with the resulting value.
            _target.setValue(elContext, value);
        }

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Examples of javax.el.ExpressionFactory

    {
        assert _condition != null;


        if (_conditionExpression == null)
        {
            ExpressionFactory factory = context.getApplication().getExpressionFactory();
            _conditionExpression = factory.createValueExpression(context.getELContext(), _condition, Boolean.class);
        }


        return _conditionExpression;
    }

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Examples of javax.el.ExpressionFactory

    {
        assert _toViewId != null;


        if (_toViewIdExpression == null)
        {
            ExpressionFactory factory = context.getApplication().getExpressionFactory();
            _toViewIdExpression = factory.createValueExpression(context.getELContext(), _toViewId, String.class);
        }


        return _toViewIdExpression;
    }

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Examples of javax.el.ExpressionFactory

    public final <T> T evaluateExpressionGet(final FacesContext context, final String expression,
                                             final Class<? extends T> expectedType) throws ELException
    {
        ELContext elContext = context.getELContext();


        ExpressionFactory factory = getExpressionFactory();


        return (T) factory.createValueExpression(elContext, expression, expectedType).getValue(elContext);
    }

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Examples of javax.el.ExpressionFactory

        MockFacesContext12 facesContext = new MockFacesContext12();
        IMocksControl mocksControl = EasyMock.createControl();
        Application application = mocksControl.createMock(Application.class);
        ViewHandler viewHandler = mocksControl.createMock(ViewHandler.class);
        ELContext elContext = mocksControl.createMock(ELContext.class);
        ExpressionFactory expressionFactory = mocksControl.createMock(ExpressionFactory.class);
        ValueExpression valueExpression = mocksControl.createMock(ValueExpression.class);
        facesContext.setApplication(application);
        facesContext.setViewRoot(root);
        facesContext.setELContext(elContext);
        
        expect(application.getViewHandler()).andReturn(viewHandler);
        expect(viewHandler.calculateLocale(facesContext)).andReturn(Locale.ENGLISH);
        expect(application.getMessageBundle()).andReturn("javax.faces.Messages");
        expect(application.getExpressionFactory()).andReturn(expressionFactory);
        String s = "xxx: Validation Error: Value is greater than allowable maximum of \"xyz\"";
        expect(expressionFactory.createValueExpression(elContext,s,String.class)).andReturn(valueExpression);
        expect(valueExpression.getValue(elContext)).andReturn(s);
        mocksControl.replay();


        assertEquals(_MessageUtils.getErrorMessage(facesContext, "javax.faces.validator.DoubleRangeValidator.MAXIMUM",
                new Object[] { "xyz", "xxx" }).getDetail(),

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