org.nd4j.linalg.indexing.conditions.ConditionBuilder Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* 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.
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.linalg.indexing.conditions;
import org.nd4j.linalg.util.ArrayUtil;
/**
* Mini dsl for building conditions
*
* @author Adam Gibson
*/
public class ConditionBuilder {
private Condition soFar;
public ConditionBuilder or(Condition... conditions) {
if (soFar == null)
soFar = new Or(conditions);
else {
soFar = new Or(ArrayUtil.combine(conditions, new Condition[] {soFar}));
}
return this;
}
public ConditionBuilder and(Condition... conditions) {
if (soFar == null)
soFar = new And(conditions);
else {
soFar = new And(ArrayUtil.combine(conditions, new Condition[] {soFar}));
}
return this;
}
public ConditionBuilder eq(Condition... conditions) {
if (soFar == null)
soFar = new ConditionEquals(conditions);
else {
soFar = new ConditionEquals(ArrayUtil.combine(conditions, new Condition[] {soFar}));
}
return this;
}
public ConditionBuilder not() {
if (soFar == null)
throw new IllegalStateException("No condition to take the opposite of");
soFar = new Not(soFar);
return this;
}
public Condition build() {
return soFar;
}
}