org.nd4j.linalg.dataset.api.preprocessor.CompositeDataSetPreProcessor Maven / Gradle / Ivy
/*
* ******************************************************************************
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* *
* * This program and the accompanying materials are made available under the
* * terms of the Apache License, Version 2.0 which is available at
* * https://www.apache.org/licenses/LICENSE-2.0.
* *
* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
* * 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.
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* * SPDX-License-Identifier: Apache-2.0
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*/
package org.nd4j.linalg.dataset.api.preprocessor;
import org.nd4j.common.base.Preconditions;
import org.nd4j.linalg.dataset.api.DataSet;
import org.nd4j.linalg.dataset.api.DataSetPreProcessor;
public class CompositeDataSetPreProcessor implements DataSetPreProcessor {
private final boolean stopOnEmptyDataSet;
private DataSetPreProcessor[] preProcessors;
/**
* @param preProcessors Preprocessors to apply. They will be applied in this order
*/
public CompositeDataSetPreProcessor(DataSetPreProcessor... preProcessors) {
this(false, preProcessors);
}
public CompositeDataSetPreProcessor(boolean stopOnEmptyDataSet, DataSetPreProcessor... preProcessors){
this.stopOnEmptyDataSet = stopOnEmptyDataSet;
this.preProcessors = preProcessors;
}
@Override
public void preProcess(DataSet dataSet) {
Preconditions.checkNotNull(dataSet, "Encountered null dataSet");
if(stopOnEmptyDataSet && dataSet.isEmpty()) {
return;
}
for(DataSetPreProcessor p : preProcessors){
p.preProcess(dataSet);
if(stopOnEmptyDataSet && dataSet.isEmpty()) {
return;
}
}
}
}