com.bull.aurocontrol.csst.poc.index.interval.NumericIntervalIntersectionQuery.java Source code

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Here is the source code for com.bull.aurocontrol.csst.poc.index.interval.NumericIntervalIntersectionQuery.java

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/*
 * Copyright 2010 The Lucene Interval Field Authors.
 *
 * Licensed 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 com.bull.aurocontrol.csst.poc.index.interval;

import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.NumericRangeQuery;

/**
 * Query that finds intervals that intersect with the given interval.
 */
public final class NumericIntervalIntersectionQuery extends BooleanQuery {
    /**
     * The start of the interval.
     */
    private final long start;

    /**
     * The end of the interval.
     */
    private final long end;

    /**
     * Creates a new numeric interval intersection query.
     * @param name The name of the field to search against.
     * @param start The start of the interval to intersect with.
     * @param end The end of the interval to intersect with.
     */
    public NumericIntervalIntersectionQuery(final String name, final long start, final long end) {
        this(name, start, end, NumericIntervalField.DEFAULT_PRECISION_STEP);
    }

    /**
     * Creates a new numeric interval intersection query.
     * @param name The name of the field to search against.
     * @param start The start of the interval to intersect with.
     * @param end The end of the interval to intersect with.
     * @param precisionStep The precision step used when indexing the intervals.
     */
    public NumericIntervalIntersectionQuery(final String name, final long start, final long end,
            final int precisionStep) {
        super(true);
        this.start = start;
        this.end = end;

        this.add(NumericRangeQuery.newLongRange(name, precisionStep, start, end, true, true),
                BooleanClause.Occur.SHOULD);
        this.add(new InNumericIntervalQuery(name, end, precisionStep), BooleanClause.Occur.SHOULD);
        this.add(new InNumericIntervalQuery(name, start, precisionStep), BooleanClause.Occur.SHOULD);
    }

    @Override
    public String toString(final String field) {
        return String.format("intersectsInterval(%d - %d, %s)", start, end, field);
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder().append(start).append(end).hashCode();
    }

    @Override
    public boolean equals(final Object o) {
        return o != null && o.getClass() == this.getClass() && ((NumericIntervalIntersectionQuery) o).start == start
                && ((NumericIntervalIntersectionQuery) o).end == end;
    }
}