Example usage for org.apache.commons.ognl Ognl createDefaultContext

Introduction

In this page you can find the example usage for org.apache.commons.ognl Ognl createDefaultContext.

Prototype

public static Map<String, Object> createDefaultContext(Object root, ClassResolver classResolver,
        TypeConverter converter) 

Source Link

Document

Creates and returns a new standard naming context for evaluating an OGNL expression.

Usage

From source file:it.d4nguard.rgrpg.util.dynacast.DynaManipulator.java

/**
 * Evaluates the given OGNL expression to insert a value into the object
 * graph rooted at the given root object.
 * /*from   w ww . j  a v  a2  s  .c  om*/
 * @param exp
 *            the OGNL expression to be parsed
 * @param root
 *            the root object for the OGNL expression
 * @param value
 *            the value to insert into the object graph
 * @throws DynaManipulatorException
 *             if something fails below.
 */
public static void setValue(String exp, Object root, String value) throws DynaManipulatorException {
    assert root != null;
    assert value != null;
    try {
        Map<String, Object> context = Ognl.createDefaultContext(root, null, new AdapterTypeConverter());
        Ognl.setValue(exp, context, root, value);
    } catch (Exception e) {
        throw new DynaManipulatorException(e);
    }
}

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From source file:it.d4nguard.rgrpg.util.dynacast.DynaManipulator.java

/**
 * Evaluates the given OGNL expression tree to extract a value from the
 * given root object.//from   w ww  . j  av a 2 s  . co  m
 * 
 * @see Ognl#parseExpression(String)
 * @param exp
 *            the OGNL expression to be parsed
 * @param root
 *            the root object for the OGNL expression
 * @return
 * @throws DynaManipulatorException
 */
public static Object getValue(String exp, Object root) throws DynaManipulatorException {
    assert root != null;
    Object ret = root;
    try {
        Object expression = Ognl.parseExpression(exp);
        Map<String, Object> context = Ognl.createDefaultContext(root, null, new AdapterTypeConverter());
        ret = Ognl.getValue(expression, context, root);
    } catch (Exception e) {
        throw new DynaManipulatorException(e);
    }
    return ret;
}

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