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Merge pull request #1269 from tristaZero/dev
Add AbstractStatementExecutor
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sharding-jdbc/src/main/java/io/shardingsphere/core/executor/AbstractStatementExecutor.java
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| /* | ||
| * Copyright 2016-2018 shardingsphere.io. | ||
| * <p> | ||
| * 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. | ||
| * </p> | ||
| */ | ||
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| package io.shardingsphere.core.executor; | ||
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| import io.shardingsphere.core.constant.DatabaseType; | ||
| import io.shardingsphere.core.constant.SQLType; | ||
| import io.shardingsphere.core.executor.sql.execute.SQLExecuteCallback; | ||
| import io.shardingsphere.core.executor.sql.execute.SQLExecuteTemplate; | ||
| import io.shardingsphere.core.executor.sql.prepare.SQLExecutePrepareTemplate; | ||
| import io.shardingsphere.core.jdbc.core.connection.ShardingConnection; | ||
| import lombok.AccessLevel; | ||
| import lombok.Getter; | ||
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| import java.sql.Connection; | ||
| import java.sql.ResultSet; | ||
| import java.sql.SQLException; | ||
| import java.sql.Statement; | ||
| import java.util.Collection; | ||
| import java.util.LinkedList; | ||
| import java.util.List; | ||
| import java.util.concurrent.CopyOnWriteArrayList; | ||
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| /** | ||
| * Abstract statement executor. | ||
| * | ||
| * @author panjuan | ||
| */ | ||
| @Getter(AccessLevel.PROTECTED) | ||
| public class AbstractStatementExecutor { | ||
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| private final DatabaseType databaseType; | ||
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| protected SQLType sqlType; | ||
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| @Getter | ||
| private final int resultSetType; | ||
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| @Getter | ||
| private final int resultSetConcurrency; | ||
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| @Getter | ||
| private final int resultSetHoldability; | ||
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| private final ShardingConnection connection; | ||
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| private final SQLExecutePrepareTemplate sqlExecutePrepareTemplate; | ||
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| private final SQLExecuteTemplate sqlExecuteTemplate; | ||
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| private final Collection<Connection> connections = new LinkedList<>(); | ||
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| @Getter | ||
| private final List<List<Object>> parameterSets = new LinkedList<>(); | ||
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| @Getter | ||
| private final List<Statement> statements = new LinkedList<>(); | ||
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| @Getter | ||
| private final List<ResultSet> resultSets = new CopyOnWriteArrayList<>(); | ||
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| private final Collection<ShardingExecuteGroup<StatementExecuteUnit>> executeGroups = new LinkedList<>(); | ||
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| public AbstractStatementExecutor(final int resultSetType, final int resultSetConcurrency, final int resultSetHoldability, final ShardingConnection shardingConnection) { | ||
| this.databaseType = shardingConnection.getShardingDataSource().getShardingContext().getDatabaseType(); | ||
| this.resultSetType = resultSetType; | ||
| this.resultSetConcurrency = resultSetConcurrency; | ||
| this.resultSetHoldability = resultSetHoldability; | ||
| this.connection = shardingConnection; | ||
| sqlExecuteTemplate = new SQLExecuteTemplate(connection.getShardingDataSource().getShardingContext().getExecuteEngine()); | ||
| sqlExecutePrepareTemplate = new SQLExecutePrepareTemplate(connection.getShardingDataSource().getShardingContext().getMaxConnectionsSizePerQuery()); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| protected <T> List<T> executeCallback(final SQLExecuteCallback<T> executeCallback) throws SQLException { | ||
| return sqlExecuteTemplate.executeGroup((Collection) executeGroups, executeCallback); | ||
| } | ||
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| /** | ||
| * Clear data. | ||
| * | ||
| * @throws SQLException sql exception | ||
| */ | ||
| public void clear() throws SQLException { | ||
| clearStatements(); | ||
| clearConnections(); | ||
| statements.clear(); | ||
| parameterSets.clear(); | ||
| connections.clear(); | ||
| resultSets.clear(); | ||
| executeGroups.clear(); | ||
| } | ||
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| private void clearStatements() throws SQLException { | ||
| for (Statement each : getStatements()) { | ||
| each.close(); | ||
| } | ||
| } | ||
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| private void clearConnections() { | ||
| for (Connection each : connections) { | ||
| connection.release(each); | ||
| } | ||
| } | ||
| } |
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