792f606a64
Contains the cql3 grammer and supporting classes, which will be converted one by one. From commit bf599fb5b062cbcc652da78b7d699e7a01b949ad.
115 lines
3.5 KiB
Java
115 lines
3.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.cql3.statements;
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import java.util.Map;
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import org.apache.cassandra.config.CFMetaData;
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import org.apache.cassandra.config.ColumnDefinition;
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import org.apache.cassandra.cql3.ColumnIdentifier;
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import org.apache.cassandra.db.index.SecondaryIndex;
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public class IndexTarget
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{
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public final ColumnIdentifier column;
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public final TargetType type;
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private IndexTarget(ColumnIdentifier column, TargetType type)
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{
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this.column = column;
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this.type = type;
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}
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public static class Raw
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{
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private final ColumnIdentifier.Raw column;
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private final TargetType type;
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private Raw(ColumnIdentifier.Raw column, TargetType type)
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{
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this.column = column;
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this.type = type;
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}
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public static Raw valuesOf(ColumnIdentifier.Raw c)
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{
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return new Raw(c, TargetType.VALUES);
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}
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public static Raw keysOf(ColumnIdentifier.Raw c)
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{
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return new Raw(c, TargetType.KEYS);
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}
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public static Raw keysAndValuesOf(ColumnIdentifier.Raw c)
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{
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return new Raw(c, TargetType.KEYS_AND_VALUES);
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}
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public static Raw fullCollection(ColumnIdentifier.Raw c)
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{
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return new Raw(c, TargetType.FULL);
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}
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public IndexTarget prepare(CFMetaData cfm)
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{
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return new IndexTarget(column.prepare(cfm), type);
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}
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}
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public static enum TargetType
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{
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VALUES, KEYS, KEYS_AND_VALUES, FULL;
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public String toString()
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{
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switch (this)
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{
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case KEYS: return "keys";
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case KEYS_AND_VALUES: return "entries";
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case FULL: return "full";
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default: return "values";
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}
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}
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public String indexOption()
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{
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switch (this)
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{
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case KEYS: return SecondaryIndex.INDEX_KEYS_OPTION_NAME;
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case KEYS_AND_VALUES: return SecondaryIndex.INDEX_ENTRIES_OPTION_NAME;
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case VALUES: return SecondaryIndex.INDEX_VALUES_OPTION_NAME;
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default: throw new AssertionError();
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}
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}
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public static TargetType fromColumnDefinition(ColumnDefinition cd)
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{
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Map<String, String> options = cd.getIndexOptions();
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if (options.containsKey(SecondaryIndex.INDEX_KEYS_OPTION_NAME))
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return KEYS;
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else if (options.containsKey(SecondaryIndex.INDEX_ENTRIES_OPTION_NAME))
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return KEYS_AND_VALUES;
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else if (cd.type.isCollection() && !cd.type.isMultiCell())
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return FULL;
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else
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return VALUES;
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}
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}
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}
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