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package org.apache.cayenne.exp.parser;
/**
* Base class for all aggregation functions expressions
* It's more like marker interface for now.
* @since 4.0
*/
public abstract class ASTAggregateFunctionCall extends ASTFunctionCall {
ASTAggregateFunctionCall(int id, String functionName) {
super(id, functionName);
}
ASTAggregateFunctionCall(int id, String functionName, Object... nodes) {
super(id, functionName, nodes);
}
@Override
protected int getRequiredChildrenCount() {
return 0;
}
@Override
protected Object evaluateSubNode(Object o, Object[] evaluatedChildren) throws Exception {
throw new UnsupportedOperationException("In-memory evaluation of aggregate functions not implemented yet.");
}
}