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package com.salesforce.phoenix.expression;
import java.math.BigDecimal;
import java.util.List;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import com.salesforce.phoenix.exception.ValueTypeIncompatibleException;
import com.salesforce.phoenix.schema.ColumnModifier;
import com.salesforce.phoenix.schema.PDataType;
import com.salesforce.phoenix.schema.tuple.Tuple;
import com.salesforce.phoenix.util.NumberUtil;
public class DecimalMultiplyExpression extends MultiplyExpression {
public DecimalMultiplyExpression() {
}
public DecimalMultiplyExpression(List<Expression> children) {
super(children);
}
@Override
public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
BigDecimal result = null;
for (int i=0; i<children.size(); i++) {
Expression childExpr = children.get(i);
if (!childExpr.evaluate(tuple, ptr)) {
return false;
}
if (ptr.getLength() == 0) {
return true;
}
PDataType childType = children.get(i).getDataType();
ColumnModifier childColumnModifier = children.get(i).getColumnModifier();
BigDecimal bd = (BigDecimal)PDataType.DECIMAL.toObject(ptr, childType, childColumnModifier);
if (result == null) {
result = bd;
} else {
result = result.multiply(bd);
}
}
if (getMaxLength() != null && getScale() != null) {
result = NumberUtil.setDecimalWidthAndScale(result, getMaxLength(), getScale());
}
if (result == null) {
throw new ValueTypeIncompatibleException(PDataType.DECIMAL, getMaxLength(), getScale());
}
ptr.set(PDataType.DECIMAL.toBytes(result));
return true;
}
@Override
public PDataType getDataType() {
return PDataType.DECIMAL;
}
}