blob: 10e834c63544ee6df2fcd095b0f599ba92631377 [file] [log] [blame]
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pinot.core.operator.transform.function;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.apache.pinot.core.operator.blocks.ProjectionBlock;
import org.apache.pinot.core.operator.transform.TransformResultMetadata;
import org.apache.pinot.segment.spi.datasource.DataSource;
/**
* <code>LogicalOperatorTransformFunction</code> abstracts common functions for logical operators (AND, OR).
* The results are BOOLEAN type.
*/
public abstract class LogicalOperatorTransformFunction extends BaseTransformFunction {
protected List<TransformFunction> _arguments;
@Override
public void init(List<TransformFunction> arguments, Map<String, DataSource> dataSourceMap) {
_arguments = arguments;
int numArguments = arguments.size();
if (numArguments <= 1) {
throw new IllegalArgumentException(
"Expect more than 1 argument for logical operator [" + getName() + "], args [" + Arrays.toString(
arguments.toArray()) + "].");
}
for (int i = 0; i < numArguments; i++) {
TransformResultMetadata argumentMetadata = arguments.get(i).getResultMetadata();
if (!(argumentMetadata.isSingleValue() && argumentMetadata.getDataType().getStoredType().isNumeric())) {
throw new IllegalArgumentException(
"Unsupported argument of index: " + i + ", expecting single-valued boolean/number");
}
}
}
@Override
public TransformResultMetadata getResultMetadata() {
return BOOLEAN_SV_NO_DICTIONARY_METADATA;
}
@Override
public int[] transformToIntValuesSV(ProjectionBlock projectionBlock) {
int numDocs = projectionBlock.getNumDocs();
if (_intValuesSV == null) {
_intValuesSV = new int[numDocs];
}
System.arraycopy(_arguments.get(0).transformToIntValuesSV(projectionBlock), 0, _intValuesSV, 0, numDocs);
int numArguments = _arguments.size();
for (int i = 1; i < numArguments; i++) {
TransformFunction transformFunction = _arguments.get(i);
int[] results = transformFunction.transformToIntValuesSV(projectionBlock);
for (int j = 0; j < numDocs; j++) {
_intValuesSV[j] = getLogicalFuncResult(_intValuesSV[j], results[j]);
}
}
return _intValuesSV;
}
abstract int getLogicalFuncResult(int left, int right);
}