Examples with ExpressionException org.apache.cayenne.exp.ExpressionException used on opensource projects

Example 6 with ExpressionException

use of org.apache.cayenne.exp.ExpressionException in project cayenne by apache.

the class Ordering method compare.

/**
 * Comparable interface implementation. Can compare two Java Beans based on
 * the stored expression.
 */
@Override
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 {
            // re-throw
            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
            throw e;
        }
    }
    if (value1 == null && value2 == null) {
        return 0;
    } else if (value1 == null) {
        return nullSortedFirst ? -1 : 1;
    } else if (value2 == null) {
        return nullSortedFirst ? 1 : -1;
    }
    if (isCaseInsensitive()) {
        // TODO: to upper case should probably be defined as a separate
        // expression
        // type
        value1 = ConversionUtil.toUpperCase(value1);
        value2 = ConversionUtil.toUpperCase(value2);
    }
    int compareResult = ConversionUtil.toComparable(value1).compareTo(ConversionUtil.toComparable(value2));
    return (isAscending()) ? compareResult : -compareResult;
}

Example 7 with ExpressionException

use of org.apache.cayenne.exp.ExpressionException in project cayenne by apache.

the class ASTNamedParameter method setValue.

@Override
public void setValue(Object value) {
    if (value == null) {
        throw new ExpressionException("Null Parameter value");
    }
    String name = value.toString().trim();
    if (name.length() == 0) {
        throw new ExpressionException("Empty Parameter value");
    }
    super.setValue(new ExpressionParameter(name));
}

Example 8 with ExpressionException

use of org.apache.cayenne.exp.ExpressionException in project cayenne by apache.

the class PrefetchModel method isToMany.

private boolean isToMany(String prefetch) {
    // totally invalid path would result in ExpressionException
    try {
        Expression exp = ExpressionFactory.exp(prefetch);
        Object object = exp.evaluate(root);
        return object instanceof Relationship && ((Relationship) object).isToMany();
    } catch (ExpressionException e) {
        return false;
    }
}

Example 9 with ExpressionException

use of org.apache.cayenne.exp.ExpressionException in project cayenne by apache.

the class EOQuery method initBindings.

private void initBindings(Map bindings, Entity entity, Map qualifier) {
    if (qualifier == null) {
        return;
    }
    if ("EOKeyValueQualifier".equals(qualifier.get("class"))) {
        String key = (String) qualifier.get("key");
        if (key == null) {
            return;
        }
        Object value = qualifier.get("value");
        if (!(value instanceof Map)) {
            return;
        }
        Map valueMap = (Map) value;
        if (!"EOQualifierVariable".equals(valueMap.get("class")) || !valueMap.containsKey("_key")) {
            return;
        }
        String name = (String) valueMap.get("_key");
        String className = null;
        // so we will use Object type for all DB path...
        try {
            Object lastObject = new ASTObjPath(key).evaluate(entity);
            if (lastObject instanceof ObjAttribute) {
                className = ((ObjAttribute) lastObject).getType();
            } else if (lastObject instanceof ObjRelationship) {
                ObjEntity target = ((ObjRelationship) lastObject).getTargetEntity();
                if (target != null) {
                    className = target.getClassName();
                }
            }
        } catch (ExpressionException ex) {
            className = "java.lang.Object";
        }
        if (className == null) {
            className = "java.lang.Object";
        }
        bindings.put(name, className);
        return;
    }
    List children = (List) qualifier.get("qualifiers");
    if (children != null) {
        Iterator it = children.iterator();
        while (it.hasNext()) {
            initBindings(bindings, entity, (Map) it.next());
        }
    }
}