Struts example source code file (Item.js)

This example Struts source code file (Item.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

array, array

The Struts Item.js source code

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.data.old.Item");
dojo.require("dojo.data.old.Observable");
dojo.require("dojo.data.old.Value");
dojo.require("dojo.lang.common");
dojo.require("dojo.lang.assert");
dojo.data.old.Item = function (dataProvider) {
	dojo.lang.assertType(dataProvider, dojo.data.old.provider.Base, {optional:true});
	dojo.data.old.Observable.call(this);
	this._dataProvider = dataProvider;
	this._dictionaryOfAttributeValues = {};
};
dojo.inherits(dojo.data.old.Item, dojo.data.old.Observable);
dojo.data.old.Item.compare = function (itemOne, itemTwo) {
	dojo.lang.assertType(itemOne, dojo.data.old.Item);
	if (!dojo.lang.isOfType(itemTwo, dojo.data.old.Item)) {
		return -1;
	}
	var nameOne = itemOne.getName();
	var nameTwo = itemTwo.getName();
	if (nameOne == nameTwo) {
		var attributeArrayOne = itemOne.getAttributes();
		var attributeArrayTwo = itemTwo.getAttributes();
		if (attributeArrayOne.length != attributeArrayTwo.length) {
			if (attributeArrayOne.length > attributeArrayTwo.length) {
				return 1;
			} else {
				return -1;
			}
		}
		for (var i in attributeArrayOne) {
			var attribute = attributeArrayOne[i];
			var arrayOfValuesOne = itemOne.getValues(attribute);
			var arrayOfValuesTwo = itemTwo.getValues(attribute);
			dojo.lang.assert(arrayOfValuesOne && (arrayOfValuesOne.length > 0));
			if (!arrayOfValuesTwo) {
				return 1;
			}
			if (arrayOfValuesOne.length != arrayOfValuesTwo.length) {
				if (arrayOfValuesOne.length > arrayOfValuesTwo.length) {
					return 1;
				} else {
					return -1;
				}
			}
			for (var j in arrayOfValuesOne) {
				var value = arrayOfValuesOne[j];
				if (!itemTwo.hasAttributeValue(value)) {
					return 1;
				}
			}
			return 0;
		}
	} else {
		if (nameOne > nameTwo) {
			return 1;
		} else {
			return -1;
		}
	}
};
dojo.data.old.Item.prototype.toString = function () {
	var arrayOfStrings = [];
	var attributes = this.getAttributes();
	for (var i in attributes) {
		var attribute = attributes[i];
		var arrayOfValues = this.getValues(attribute);
		var valueString;
		if (arrayOfValues.length == 1) {
			valueString = arrayOfValues[0];
		} else {
			valueString = "[";
			valueString += arrayOfValues.join(", ");
			valueString += "]";
		}
		arrayOfStrings.push("  " + attribute + ": " + valueString);
	}
	var returnString = "{ ";
	returnString += arrayOfStrings.join(",\n");
	returnString += " }";
	return returnString;
};
dojo.data.old.Item.prototype.compare = function (otherItem) {
	return dojo.data.old.Item.compare(this, otherItem);
};
dojo.data.old.Item.prototype.isEqual = function (otherItem) {
	return (this.compare(otherItem) == 0);
};
dojo.data.old.Item.prototype.getName = function () {
	return this.get("name");
};
dojo.data.old.Item.prototype.get = function (attributeId) {
	var literalOrValueOrArray = this._dictionaryOfAttributeValues[attributeId];
	if (dojo.lang.isUndefined(literalOrValueOrArray)) {
		return null;
	}
	if (literalOrValueOrArray instanceof dojo.data.old.Value) {
		return literalOrValueOrArray.getValue();
	}
	if (dojo.lang.isArray(literalOrValueOrArray)) {
		var dojoDataValue = literalOrValueOrArray[0];
		return dojoDataValue.getValue();
	}
	return literalOrValueOrArray;
};
dojo.data.old.Item.prototype.getValue = function (attributeId) {
	var literalOrValueOrArray = this._dictionaryOfAttributeValues[attributeId];
	if (dojo.lang.isUndefined(literalOrValueOrArray)) {
		return null;
	}
	if (literalOrValueOrArray instanceof dojo.data.old.Value) {
		return literalOrValueOrArray;
	}
	if (dojo.lang.isArray(literalOrValueOrArray)) {
		var dojoDataValue = literalOrValueOrArray[0];
		return dojoDataValue;
	}
	var literal = literalOrValueOrArray;
	dojoDataValue = new dojo.data.old.Value(literal);
	this._dictionaryOfAttributeValues[attributeId] = dojoDataValue;
	return dojoDataValue;
};
dojo.data.old.Item.prototype.getValues = function (attributeId) {
	var literalOrValueOrArray = this._dictionaryOfAttributeValues[attributeId];
	if (dojo.lang.isUndefined(literalOrValueOrArray)) {
		return null;
	}
	if (literalOrValueOrArray instanceof dojo.data.old.Value) {
		var array = [literalOrValueOrArray];
		this._dictionaryOfAttributeValues[attributeId] = array;
		return array;
	}
	if (dojo.lang.isArray(literalOrValueOrArray)) {
		return literalOrValueOrArray;
	}
	var literal = literalOrValueOrArray;
	var dojoDataValue = new dojo.data.old.Value(literal);
	array = [dojoDataValue];
	this._dictionaryOfAttributeValues[attributeId] = array;
	return array;
};
dojo.data.old.Item.prototype.load = function (attributeId, value) {
	this._dataProvider.registerAttribute(attributeId);
	var literalOrValueOrArray = this._dictionaryOfAttributeValues[attributeId];
	if (dojo.lang.isUndefined(literalOrValueOrArray)) {
		this._dictionaryOfAttributeValues[attributeId] = value;
		return;
	}
	if (!(value instanceof dojo.data.old.Value)) {
		value = new dojo.data.old.Value(value);
	}
	if (literalOrValueOrArray instanceof dojo.data.old.Value) {
		var array = [literalOrValueOrArray, value];
		this._dictionaryOfAttributeValues[attributeId] = array;
		return;
	}
	if (dojo.lang.isArray(literalOrValueOrArray)) {
		literalOrValueOrArray.push(value);
		return;
	}
	var literal = literalOrValueOrArray;
	var dojoDataValue = new dojo.data.old.Value(literal);
	array = [dojoDataValue, value];
	this._dictionaryOfAttributeValues[attributeId] = array;
};
dojo.data.old.Item.prototype.set = function (attributeId, value) {
	this._dataProvider.registerAttribute(attributeId);
	this._dictionaryOfAttributeValues[attributeId] = value;
	this._dataProvider.noteChange(this, attributeId, value);
};
dojo.data.old.Item.prototype.setValue = function (attributeId, value) {
	this.set(attributeId, value);
};
dojo.data.old.Item.prototype.addValue = function (attributeId, value) {
	this.load(attributeId, value);
	this._dataProvider.noteChange(this, attributeId, value);
};
dojo.data.old.Item.prototype.setValues = function (attributeId, arrayOfValues) {
	dojo.lang.assertType(arrayOfValues, Array);
	this._dataProvider.registerAttribute(attributeId);
	var finalArray = [];
	this._dictionaryOfAttributeValues[attributeId] = finalArray;
	for (var i in arrayOfValues) {
		var value = arrayOfValues[i];
		if (!(value instanceof dojo.data.old.Value)) {
			value = new dojo.data.old.Value(value);
		}
		finalArray.push(value);
		this._dataProvider.noteChange(this, attributeId, value);
	}
};
dojo.data.old.Item.prototype.getAttributes = function () {
	var arrayOfAttributes = [];
	for (var key in this._dictionaryOfAttributeValues) {
		arrayOfAttributes.push(this._dataProvider.getAttribute(key));
	}
	return arrayOfAttributes;
};
dojo.data.old.Item.prototype.hasAttribute = function (attributeId) {
	return (attributeId in this._dictionaryOfAttributeValues);
};
dojo.data.old.Item.prototype.hasAttributeValue = function (attributeId, value) {
	var arrayOfValues = this.getValues(attributeId);
	for (var i in arrayOfValues) {
		var candidateValue = arrayOfValues[i];
		if (candidateValue.isEqual(value)) {
			return true;
		}
	}
	return false;
};