| /* |
| * 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.cassandra.cql3.restrictions; |
| |
| import org.apache.cassandra.cql3.QueryOptions; |
| import org.apache.cassandra.cql3.statements.Bound; |
| import org.apache.cassandra.db.MultiCBuilder; |
| |
| /** |
| * A single restriction/clause on one or multiple column. |
| */ |
| public interface SingleRestriction extends Restriction |
| { |
| public default boolean isSlice() |
| { |
| return false; |
| } |
| |
| public default boolean isEQ() |
| { |
| return false; |
| } |
| |
| public default boolean isLIKE() |
| { |
| return false; |
| } |
| |
| public default boolean isIN() |
| { |
| return false; |
| } |
| |
| public default boolean isContains() |
| { |
| return false; |
| } |
| |
| public default boolean isNotNull() |
| { |
| return false; |
| } |
| |
| public default boolean isMultiColumn() |
| { |
| return false; |
| } |
| |
| /** |
| * Checks if the specified bound is set or not. |
| * @param b the bound type |
| * @return <code>true</code> if the specified bound is set, <code>false</code> otherwise |
| */ |
| public default boolean hasBound(Bound b) |
| { |
| return true; |
| } |
| |
| /** |
| * Checks if the specified bound is inclusive or not. |
| * @param b the bound type |
| * @return <code>true</code> if the specified bound is inclusive, <code>false</code> otherwise |
| */ |
| public default boolean isInclusive(Bound b) |
| { |
| return true; |
| } |
| |
| /** |
| * Merges this restriction with the specified one. |
| * |
| * <p>Restriction are immutable. Therefore merging two restrictions result in a new one. |
| * The reason behind this choice is that it allow a great flexibility in the way the merging can done while |
| * preventing any side effect.</p> |
| * |
| * @param otherRestriction the restriction to merge into this one |
| * @return the restriction resulting of the merge |
| */ |
| public SingleRestriction mergeWith(SingleRestriction otherRestriction); |
| |
| /** |
| * Appends the values of this <code>SingleRestriction</code> to the specified builder. |
| * |
| * @param builder the <code>MultiCBuilder</code> to append to. |
| * @param options the query options |
| * @return the <code>MultiCBuilder</code> |
| */ |
| public MultiCBuilder appendTo(MultiCBuilder builder, QueryOptions options); |
| |
| /** |
| * Appends the values of the <code>SingleRestriction</code> for the specified bound to the specified builder. |
| * |
| * @param builder the <code>MultiCBuilder</code> to append to. |
| * @param bound the bound |
| * @param options the query options |
| * @return the <code>MultiCBuilder</code> |
| */ |
| public default MultiCBuilder appendBoundTo(MultiCBuilder builder, Bound bound, QueryOptions options) |
| { |
| return appendTo(builder, options); |
| } |
| } |