com.blazebit.persistence.KeysetQueryBuilder Maven / Gradle / Ivy

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/*
 * Copyright 2014 - 2019 Blazebit.
 *
 * 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.blazebit.persistence;

import java.io.Serializable;

/**
 * A base interface for builders that support keyset filtering.
 *
 * @param  The concrete builder type
 * @author Christian Beikov
 * @since 1.0.0
 */
public interface KeysetQueryBuilder> {

    /**
     * Uses the keyset which the keyset builder constructed to filter out rows that come after the keyset.
     * Based on the order by expressions, the keyset builder should receive reference values for every used expression.
     * The constructed keyset will be filtered out so this is like a "lower than" filter.
     * 
     * @return The keyset builder for specifing the keyset
     */
    public KeysetBuilder beforeKeyset();

    /**
     * Like {@link FullQueryBuilder#beforeKeyset()} but maps the reference values by position instead of by expression.
     * The order of the reference values has to match the order of the order by expressions.
     * 
     * @param values The reference values
     * @return The query builder for chaining calls
     */
    public X beforeKeyset(Serializable... values);

    /**
     * Like {@link FullQueryBuilder#beforeKeyset(java.io.Serializable...)} but uses the given keyset as reference values.
     * The order of the tuple values has to match the order of the order by expressions.
     * 
     * @param keyset The reference keyset
     * @return The query builder for chaining calls
     */
    public X beforeKeyset(Keyset keyset);

    /**
     * Uses the keyset which the keyset builder constructed to filter out rows that come before the keyset.
     * Based on the order by expressions, the keyset builder should receive reference values for every used expression.
     * The constructed keyset will be filtered out so this is like a "greater than" filter.
     * 
     * @return The keyset builder for specifing the keyset
     */
    public KeysetBuilder afterKeyset();

    /**
     * Like {@link FullQueryBuilder#afterKeyset()} but maps the reference values by position instead of by expression.
     * The order of the reference values has to match the order of the order by expressions.
     * 
     * @param values The reference values
     * @return The query builder for chaining calls
     */
    public X afterKeyset(Serializable... values);

    /**
     * Like {@link FullQueryBuilder#afterKeyset(java.io.Serializable...)} but uses the given keyset as reference values.
     * The order of the tuple values has to match the order of the order by expressions.
     * 
     * @param keyset The reference keyset
     * @return The query builder for chaining calls
     */
    public X afterKeyset(Keyset keyset);
}