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A fork of the Apache Cassandra Project ready to embed Elasticsearch.
/*
* 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 java.util.List;
import org.apache.cassandra.config.ColumnDefinition;
import org.apache.cassandra.cql3.QueryOptions;
import org.apache.cassandra.cql3.functions.Function;
import org.apache.cassandra.db.filter.RowFilter;
import org.apache.cassandra.index.SecondaryIndexManager;
/**
* Implementation of this class must be immutable.
*/
public interface Restriction
{
public default boolean isOnToken()
{
return false;
}
/**
* Returns the definition of the first column.
* @return the definition of the first column.
*/
public ColumnDefinition getFirstColumn();
/**
* Returns the definition of the last column.
* @return the definition of the last column.
*/
public ColumnDefinition getLastColumn();
/**
* Returns the column definitions in position order.
* @return the column definitions in position order.
*/
public List getColumnDefs();
/**
* Adds all functions (native and user-defined) used by any component of the restriction
* to the specified list.
* @param functions the list to add to
*/
void addFunctionsTo(List functions);
/**
* Check if the restriction is on indexed columns.
*
* @param indexManager the index manager
* @return true
if the restriction is on indexed columns, false
*/
public boolean hasSupportingIndex(SecondaryIndexManager indexManager);
/**
* Adds to the specified row filter the expressions corresponding to this Restriction
.
*
* @param filter the row filter to add expressions to
* @param indexManager the secondary index manager
* @param options the query options
*/
public void addRowFilterTo(RowFilter filter,
SecondaryIndexManager indexManager,
QueryOptions options);
}
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