Bug 145022 Provide a utility method to help GUI enhance aggregate on.
DtE will provide a method hasAggregation(String expression) in org.eclipse.birt.core.data.ExpressionUtil, and the return value will be true when the expression is a valid JS expression and it has aggregation defined.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/ExpressionUtil.java
this.candidateKey1 = candidateKey1;
		this.candidateKey2 = candidateKey2;
	}
	public int getRetrieveSize( )
	{
		return this.retrieveSize;
	}
	public int getNewIndex( )
	{
		return this.newIndex;
	}
	public boolean isCandidateKey( )
	{
		return this.isCandidateKey;
	}
	public boolean omitNextQuote( )
	{
		return this.omitNextQuote;
	}
	public boolean getCandidateKey1( )
	{
		return this.candidateKey1;
	}
	public boolean getCandidateKey2( )
	{
		return this.candidateKey2;
	}
}
class ColumnBinding implements IColumnBinding
{