Example usage for java.beans Expression Expression

Introduction

In this page you can find the example usage for java.beans Expression Expression.

Prototype

public Expression(Object value, Object target, String methodName, Object[] arguments) 

Source Link

Document

Creates a new Expression object with the specified value for the specified target object to invoke the method specified by the name and by the array of arguments.

Usage

From source file:Test.java

public static void main(String args[]) throws Exception {
    Person person = new Person();
    String arguments[] = { "AAA" };
    Expression expression = new Expression(null, person, "setName", arguments);

    System.out.println("Name: " + person.getName());
    expression.execute();// ww w . java 2  s . c om
    System.out.println("Name: " + person.getName());

    System.out.println();
    expression = new Expression(null, person, "getName", null);
    System.out.println("Name: " + person.getName());
    expression.execute();
    System.out.println("getValue: " + expression.getValue());
}

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From source file:com.swingtech.commons.util.ClassUtil.java

/**
 * NOTE: When using this to print an object it will not display the
 * primitive type boolean. Must use the wrapper class. All other primitives
 * work fine.//from w w w  .j  av a 2  s. c  om
 *
 * NOTE: If an int value has a 0 it won't display.
 *
 * NOTE: Object must have a public constructor.
 *
 * @param object
 * @return
 */
public static String getXMLForObject(final Object object) {
    ByteArrayOutputStream baos = null;
    XMLEncoder e = null;

    baos = new ByteArrayOutputStream();
    e = new XMLEncoder(new BufferedOutputStream(baos));

    e.setPersistenceDelegate(Date.class, new PersistenceDelegate() {
        @Override
        protected Expression instantiate(final Object oldInstance, final Encoder out) {
            final Date date = (Date) oldInstance;
            final Long time = new Long(date.getTime());
            return new Expression(date, date.getClass(), "new", new Object[] { time });
        }
    });

    e.setPersistenceDelegate(BigDecimal.class, new PersistenceDelegate() {
        @Override
        protected Expression instantiate(final Object oldInstance, final Encoder out) {
            final BigDecimal bigDec = (BigDecimal) oldInstance;
            final double doubleVal = bigDec.doubleValue();
            return new Expression(bigDec, bigDec.getClass(), "new", new Object[] { new Double(doubleVal) });
        }
    });

    e.writeObject(object);
    e.close();

    return baos.toString();
}

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