SumExpression.java

package org.yamcs.yarch.streamsql;

import org.yamcs.yarch.streamsql.CompilableAggregateExpression;
import org.yamcs.yarch.streamsql.Expression;
import org.yamcs.yarch.streamsql.ParseException;
import org.yamcs.yarch.streamsql.StreamSqlException;


public class SumExpression extends CompilableAggregateExpression {

	public SumExpression(Expression[] args, boolean star) throws ParseException {
		super(args,star);
	}

	@Override
	protected void doBind() throws StreamSqlException {
		type=children[0].type;// TODO Auto-generated method stub
		
	}

    @Override
    protected void aggregateFillCode_Declarations(StringBuilder code) {
        code.append("\t"+getType().primitiveJavaType()+" sum;\n");
        
    }

    @Override
    protected void aggregateFillCode_clear(StringBuilder code) {
        code.append("\t\tsum=0;\n");
    }

    @Override
    protected void aggregateFillCode_getValue(StringBuilder code) {
       code.append("\t\treturn sum;\n");
        
    }

    @Override
    protected void aggregateFillCode_newData(StringBuilder code) throws StreamSqlException {
        fillCode_AllInputDefVars(code);
        //code.append("\t\tsum+=col"+children[0].getColName()+".get"+children[0].getType().capitalized()+"()");
        code.append("\t\tsum+=col"+children[0].getColName());
        code.append(";\n");
    }
}