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More helpful exceptions in itemFields methods when given an invalid fieldID or a fieldID with no associated itemTypes (neither should actually happen once things are set up right)

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This commit is contained in:
Dan Stillman 2006-06-04 19:37:03 +00:00
parent 1d9fa85c15
commit d22d77fedf
1 changed files with 24 additions and 0 deletions
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24
chrome/chromeFiles/content/scholar/xpcom/data_access.js
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@ -1536,6 +1536,13 @@ Scholar.ItemFields = new function(){
if (!_fields.length){
_loadFields();
}
_fieldCheck(fieldID);
if (!_fields[fieldID]['itemTypes']){
throw('No associated itemTypes for fieldID ' + fieldID);
}
return !!_fields[fieldID]['itemTypes'][itemTypeID];
}
@ -1544,6 +1551,9 @@ Scholar.ItemFields = new function(){
if (!_fields.length){
_loadFields();
}
_fieldCheck(fieldID);
var ffid = _fields[fieldID]['formatID'];
return _fieldFormats[ffid] ? _fieldFormats[ffid]['isInteger'] : false;
}
@ -1565,6 +1575,20 @@ Scholar.ItemFields = new function(){
}
/**
* Check whether a fieldID is valid, throwing an exception if not
* (since it should never actually happen)
**/
function _fieldCheck(fieldID){
if (!_fields.length){
_loadFields();
}
if (typeof _fields[fieldID]=='undefined'){
throw('Invalid fieldID ' + fieldID);
}
}
/*
* Returns hash array of itemTypeIDs for which a given field is valid
*/