792f606a64
Contains the cql3 grammer and supporting classes, which will be converted one by one. From commit bf599fb5b062cbcc652da78b7d699e7a01b949ad.
64 lines
2.4 KiB
Java
64 lines
2.4 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;
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import org.apache.cassandra.transport.messages.ResultMessage;
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import org.apache.cassandra.service.ClientState;
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import org.apache.cassandra.service.QueryState;
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import org.apache.cassandra.exceptions.*;
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public interface CQLStatement
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{
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/**
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* Returns the number of bound terms in this statement.
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*/
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public int getBoundTerms();
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/**
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* Perform any access verification necessary for the statement.
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*
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* @param state the current client state
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*/
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public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException;
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/**
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* Perform additional validation required by the statment.
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* To be overriden by subclasses if needed.
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*
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* @param state the current client state
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*/
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public void validate(ClientState state) throws RequestValidationException;
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/**
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* Execute the statement and return the resulting result or null if there is no result.
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*
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* @param state the current query state
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* @param options options for this query (consistency, variables, pageSize, ...)
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*/
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public ResultMessage execute(QueryState state, QueryOptions options) throws RequestValidationException, RequestExecutionException;
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/**
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* Variante of execute used for internal query against the system tables, and thus only query the local node.
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*
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* @param state the current query state
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*/
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public ResultMessage executeInternal(QueryState state, QueryOptions options) throws RequestValidationException, RequestExecutionException;
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boolean usesFunction(String ksName, String functionName);
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}
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