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/*******************************************************************************
* Copyright (c) 2001, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jem.internal.proxy.remote;
/*
*/
import org.eclipse.jem.internal.proxy.common.remote.Commands;
import org.eclipse.jem.internal.proxy.core.*;
/**
* Remote Implementation of the BeanType proxy for java.lang.String
* Creation date: (2/6/00 9:01:23 AM)
* @author: Joe Winchester
*/
final class REMStringBeanTypeProxy extends REMAbstractBeanTypeProxy implements IREMConstantBeanTypeProxy {
// Cache a proxy to an empty string for speed
protected final IStringBeanProxy emptyStringProxy;
/**
* IDEStringBeanTypeProxy constructor comment.
* @param aClass java.lang.Class
*/
REMStringBeanTypeProxy(REMProxyFactoryRegistry aRegistry, IBeanTypeProxy objectTypeProxy) {
super(aRegistry, new Integer(Commands.STRING_CLASS), String.class.getName(), objectTypeProxy);
// Cache a proxy to an empty string for speed
emptyStringProxy = new REMStringBeanProxy(aRegistry, ""); //$NON-NLS-1$
}
/**
* Helper to create string beans
* Package protected because no-one else outside the package should use this, they
* must go through the API where you look up a factory first.
*/
IStringBeanProxy createStringBeanProxy(String aString){
if ( aString.equals("") ) {//$NON-NLS-1$
return emptyStringProxy;
} else {
return new REMStringBeanProxy(fRegistry, aString);
}
}
/**
* Create a new bean proxy with the specified id.
*
* For all of the primitive wrapper types, this is an invalid operation. They are created
* explicitly through the appropriate create method.
*/
public IREMBeanProxy newBeanProxy(Integer anID) {
throw new UnsupportedOperationException();
}
/**
* newBeanTypeForClass: Create a new beantypeproxy of this kind for the given class.
* This is used by beantype proxy factory when creating a beantype proxy for a subclass.
* This is because subclasses, unless explicitly overridden, should use the same kind
* of beantype proxy. This way if anything special is needed for a specific type, then
* that can be done.
*
* For all of the primitive wrapper types, they are final classes, so you can't create a newBeanType
* for subclasses.
*/
public IREMBeanTypeProxy newBeanTypeForClass(Integer anID, String aClassname, boolean anAbstract) {
throw new UnsupportedOperationException();
}
/**
* newInstance method. String has a default ctor, but it results in the emptyStringProxy,
* so return the zeroProxy for this case because that is the default value.
*/
public IBeanProxy newInstance() {
return emptyStringProxy;
}
/**
* newInstance method comment. Put a short cut in for strings so we don't need to go to the remote
* vm just to create a string.
*/
public IBeanProxy newInstance(String initializationString) throws ThrowableProxy, ClassCastException, InstantiationException {
if (initializationString.length() <= 1)
return super.newInstance(initializationString); // Not large enough for two quotes, so let default handle it.
// Need a quick check that it is only one quoted string. Anything else needs to be passed on up.
String s = initializationString.trim();
int sl = s.length()-1;
if (s.charAt(0) != '"' || s.charAt(sl) != '"')
return super.newInstance(initializationString); // No leading and trailing quote.
StringBuffer sb = new StringBuffer(sl);
boolean escape = false;
for (int i=1; i<sl; i++) {
char c = s.charAt(i);
if (c == '\\') {
escape = true;
continue;
}
if (!escape && c == '"')
return super.newInstance(initializationString); // Had a quote in the middle without an escape. This means an expression, send on up.
escape = false;
sb.append(c);
}
return getProxyFactoryRegistry().getBeanProxyFactory().createBeanProxyWith(sb.toString());
}
/**
* Create a new bean proxy the ValueObject passed in.
* We will assume the object is correct type.
*/
public IBeanProxy newBeanProxy(Commands.ValueObject value) {
return createStringBeanProxy((String) value.anObject);
}
}
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