Examples of org.apache.cayenne.exp.Expression.evaluate()

org.apache.cayenne.exp.Expression.evaluate()
Calculates expression value with object as a context for path expressions. @since 1.1

        throw e;
      }
    }
    
    try {
          value2 = exp.evaluate(o2);
    } catch (ExpressionException e) {
      if (pathExceptionSuppressed && e.getCause() instanceof org.apache.cayenne.reflect.UnresolvablePathException) {
        //do nothing, we expect this 
      } else {
        //rethrow

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    public int compare(Object o1, Object o2) {
        Expression exp = getSortSpec();
    Object value1 = null;
    Object value2 = null;
    try {
          value1 = exp.evaluate(o1);
    } catch (ExpressionException e) {
      if (pathExceptionSuppressed && e.getCause() instanceof org.apache.cayenne.reflect.UnresolvablePathException) {
        //do nothing, we expect this 
      } else {
        //rethrow

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        throw e;
      }
    }
    
    try {
          value2 = exp.evaluate(o2);
    } catch (ExpressionException e) {
      if (pathExceptionSuppressed && e.getCause() instanceof org.apache.cayenne.reflect.UnresolvablePathException) {
        //do nothing, we expect this 
      } else {
        //rethrow

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    public int compare(Object o1, Object o2) {
        Expression exp = getSortSpec();
    Object value1 = null;
    Object value2 = null;
    try {
          value1 = exp.evaluate(o1);
    } catch (ExpressionException e) {
      if (pathExceptionSuppressed && e.getCause() instanceof org.apache.cayenne.reflect.UnresolvablePathException) {
        //do nothing, we expect this 
      } else {
        //rethrow

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        throw e;
      }
    }
    
    try {
          value2 = exp.evaluate(o2);
    } catch (ExpressionException e) {
      if (pathExceptionSuppressed && e.getCause() instanceof org.apache.cayenne.reflect.UnresolvablePathException) {
        //do nothing, we expect this 
      } else {
        //rethrow

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     * Comparable interface implementation. Can compare two Java Beans based on the stored
     * expression.
     */
    public int compare(Object o1, Object o2) {
        Expression exp = getSortSpec();
        Object value1 = exp.evaluate(o1);
        Object value2 = exp.evaluate(o2);


        // nulls first policy... maybe make this configurable as some DB do
        if (value1 == null) {
            return (value2 == null) ? 0 : -1;

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     * expression.
     */
    public int compare(Object o1, Object o2) {
        Expression exp = getSortSpec();
        Object value1 = exp.evaluate(o1);
        Object value2 = exp.evaluate(o2);


        // nulls first policy... maybe make this configurable as some DB do
        if (value1 == null) {
            return (value2 == null) ? 0 : -1;
        }

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        Expression e = Expression.fromString("db:paintingArray.PAINTING_TITLE");


        ObjEntity ae = runtime.getDataDomain().getEntityResolver().getObjEntity(Artist.class);
        DbEntity ade = ae.getDbEntity();


        Object objTarget = e.evaluate(ae);
        assertTrue(objTarget instanceof DbAttribute);


        Object dbTarget = e.evaluate(ade);
        assertTrue(dbTarget instanceof DbAttribute);
    }

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        DbEntity ade = ae.getDbEntity();


        Object objTarget = e.evaluate(ae);
        assertTrue(objTarget instanceof DbAttribute);


        Object dbTarget = e.evaluate(ade);
        assertTrue(dbTarget instanceof DbAttribute);
    }


    public void testEvaluateEQUAL_TOBigDecimal() throws Exception {
        BigDecimal bd1 = new BigDecimal("2.0");

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        assertFalse("Failed: " + notLike, notLike.match(match2));
    }


    public void testEvaluateADD() throws Exception {
        Expression add = new ASTAdd(new Object[] { new Integer(1), new Double(5.5) });
        assertEquals(6.5, ((Number) add.evaluate(null)).doubleValue(), 0.0001);
    }


    public void testEvaluateSubtract() throws Exception {
        Expression subtract = new ASTSubtract(new Object[] { new Integer(1), new Double(0.1), new Double(0.2) });
        assertEquals(0.7, ((Number) subtract.evaluate(null)).doubleValue(), 0.0001);

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