No question today just sharing my frustration. I got tired of not have a way
of storing name value pairs on the client side the way that I can on the
server so I through togather this little js file that I named Collection. It
is not modeled after the java.util.collection but rather more like a
HashMap. If anyone else can benifit from this utility have at it.
/*
Collection.js
AUTHOR:
Bryan LaPlante
[EMAIL PROTECTED]
Network Web Applications
http://www.netwebapps.com
DESCRIPTION: Collection
creates a new collection of name=value pairs and provides methods for
retrieving one or a list of keys or values.
CREATE A COLLECTION:
myCollection = new Collection();
METHODS
myCollection.clear(); // Removes all of the key value pairs but does
not destroy the collection.
myCollection.put(key,value); //Creates an entry into the collection
myCollection.getValue(key); // does a case sensitive search for a
key in the collection and returns it's value
myCollection.getValueNoCase(key); // does a case insensitive search
for a key in the collection and returns it's value
myCollection.getKeyArray(); //returns an array of keys
myCollection.getValueArray(); // returns an array of values
EXAMPLE:
Un comment the code at the bottom of the script to see
an example of how to use the collection.
*/
function Map(key,val){
this.key = key;
this.val = val;
}
function Collection(){
this.collectionMap = new Array();
this.clear = clearMap;
this.put = putMap;
this.getValue = getValue;
this.getValueNoCase = getValueNoCase;
this.getKeyArray = getKeyArray;
this.getValueArray = getValueArray;
}
function putMap(key,val){
existingKeys = this.getKeyArray();
isUniqueKey = true;
for(i=0; i<existingKeys.length; i++){
if(existingKeys[i] == key){
isUniqueKey = false;
this.collectionMap[i].val=val;
break;
}
}
if(isUniqueKey){
this.collectionMap[this.collectionMap.length]= new
Map(key,val);
}
}
function clearMap(){
this.collectionMap.length=0;
}
function getValue(key){
for(i=0; i<this.collectionMap.length; i++){
if(this.collectionMap[i].key == key){
return this.collectionMap[i].val;
}
}
return null;
}
function getValueNoCase(key){
for(i=0; i<this.collectionMap.length; i++){
if(this.collectionMap[i].key.toLowerCase() ==
key.toLowerCase()){
return this.collectionMap[i].val;
}
}
return null;
}
function getKeyArray(){
keyArray = new Array();
for(i=0; i<this.collectionMap.length; i++){
keyArray[keyArray.length]=this.collectionMap[i].key;
}
return keyArray;
}
function getValueArray(){
valueArray = new Array();
for(i=0; i<this.collectionMap.length; i++){
valueArray[valueArray.length]=this.collectionMap[i].val;
}
return valueArray;
}
/*
/////------- Uncomment this section for testing
--------///////////////////////
//create the collection
collection = new Collection();
// clear the collection
collection.clear();
// add name value pairs to the collection
collection.put("bryan","user1");
collection.put("bruce","user2");
collection.put("dan","user3");
// putting bryan again will update the previous entry's value to
user4
collection.put("bryan","user4");
// get an array of keys
myKeys = collection.getKeyArray();
// get an array of values
myVals = collection.getValueArray();
//Output the names and their values into an html list item
document.write("<ul>");
for(c=0; c<myKeys.length; c++){
document.write("<li>" + myKeys[c].toString() +"=" +
myVals[c].toString());
}
document.write("<ul>");
*/
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