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/*-*- mode: Java; tab-width:8 -*-*/
package io.soluble.pjb.bridge;
/*
* Copyright (C) 2003-2007 Jost Boekemeier
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
/**
* Maps php iterator to java iterator.
*
* @author jostb
*/
public abstract class PhpMap {
JavaBridge _bridge;
Object value;
Class componentType;
boolean keyType; //false: key is integer (array), true: key is string (hash)
protected PhpMap(JavaBridge bridge, Object value, boolean keyType) {
this._bridge = bridge;
this.value = value;
this.keyType = keyType;
this.componentType = value.getClass().getComponentType();
init();
}
protected Object coerce(Object val) {
return _bridge.coerce(componentType, val, _bridge.request.response);
}
protected abstract void init();
/**
* Returns the object at the current position.
*
* @return The current object.
*/
public abstract Object currentData();
/**
* Returns the key at the current position.
*
* @return The current key, either a string or a number.
*/
public abstract Object currentKey();
/**
* Forward one element.
*
* @return true if move was possible, false otherwise.
*/
public abstract boolean moveForward();
/**
* Checks if it is possible to advance one element
*
* @return true if next element exists, false otherwise
*/
public abstract boolean hasMore();
/**
* Returns the key type.
*
* @return false if key is integer (array index), true if key is string (hash key)
*/
public boolean getType() {
return keyType;
}
/**
* Returns a PhpMap for a given value.
*
* @param value The value, must be an array or implement Map or Collection
* @param bridge The bridge instance
* @return The PhpMap
*/
public static PhpMap getPhpMap(Object value, JavaBridge bridge) {
if (bridge.logLevel > 3) bridge.logDebug("returning map for " + value.getClass());
if (value.getClass().isArray()) {
return
new PhpMap(bridge, value, false) {
boolean valid;
int i;
int length;
protected void init() {
i = 0;
length = Array.getLength(this.value);
valid = length > 0;
}
public Object currentData() {
if (!valid) return null;
return Array.get(this.value, i);
}
public Object currentKey() {
if (!valid) return null;
return _bridge.castToExact(new Integer(i));
}
public boolean moveForward() {
valid = ++i < length;
return valid ? true : false;
}
public boolean hasMore() {
return valid ? true : false;
}
};
}
if (value instanceof Collection) {
return
new PhpMap(bridge, value, false) {
int i;
boolean valid;
Iterator iter;
protected void init() {
iter = ((Collection) (this.value)).iterator();
i = 0;
valid = false;
if (iter.hasNext()) {
valid = true;
this.value = iter.next();
}
}
public Object currentData() {
return this.value;
}
public Object currentKey() {
return _bridge.castToExact(new Integer(i));
}
public boolean moveForward() {
if (iter.hasNext()) {
i++;
this.value = iter.next();
return valid = true;
} else {
return valid = false;
}
}
public boolean hasMore() {
return valid;
}
};
}
if (value instanceof Map) {
return
new PhpMap(bridge, value, true) {
Object currentKey;
Iterator iter;
protected void init() {
iter = ((Map) (this.value)).keySet().iterator();
currentKey = null;
if (iter.hasNext()) {
currentKey = iter.next();
}
}
public Object currentData() {
if (currentKey == null) return null;
return ((Map) (this.value)).get(currentKey);
}
public Object currentKey() {
return new SimplePhpString(_bridge, String.valueOf(currentKey));
}
public boolean moveForward() {
currentKey = iter.hasNext() ? iter.next() : null;
return currentKey == null ? false : true;
}
public boolean hasMore() {
return currentKey == null ? false : true;
}
};
}
return null;
}
}