private void sortResultDescriptors()

in rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ReadCommandImpl.java [73:114]

34 lines of code
10 McCabe index (conditional complexity)


	private void sortResultDescriptors(){
		if(this.resultDescriptors == null) {
			return;
		}
		
		if( this.resultDescriptors.size()==0) {
			return;
		}
		
		//when any index is found not set, do not sort	
		for(Iterator it =  this.resultDescriptors.iterator() ; it.hasNext();){
			ResultDescriptor resultDescriptor = (ResultDescriptor) it.next();
			if(resultDescriptor.getColumnIndex() <= -1){
				return;
			}
		}

		//now is time to sort
		Object[] resultDescAry = this.resultDescriptors.toArray();
		for(int i=0; i<resultDescAry.length; i++){
			for(int j=i+1; j<resultDescAry.length; j++){
				if( ((ResultDescriptor)resultDescAry[j]).getColumnIndex()
						< ((ResultDescriptor)resultDescAry[i]).getColumnIndex()){
					ResultDescriptor tmpResDesc = (ResultDescriptor)resultDescAry[i];
					resultDescAry[i] = resultDescAry[j];
					resultDescAry[j] = tmpResDesc;
				}
				
				if( ((ResultDescriptor)resultDescAry[j]).getColumnIndex()
						== ((ResultDescriptor)resultDescAry[i]).getColumnIndex()){
					throw new RuntimeException("Two columns in Result Descriptor can not have same index");				
				}
			}
		}
		
		this.resultDescriptors.clear();
		for(int i=0; i<resultDescAry.length; i++){
			this.resultDescriptors.add(resultDescAry[i]);
		}
		
		return;
	}