/*
* Copyright 1999-2015 dangdang.com.
* <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>
*/
package com.dangdang.ddframe.rdb.sharding.jdbc.adapter;
import com.dangdang.ddframe.rdb.sharding.jdbc.unsupported.AbstractUnsupportedOperationConnection;
import com.dangdang.ddframe.rdb.sharding.metrics.MetricsContext;
import com.dangdang.ddframe.rdb.sharding.util.SQLUtil;
import com.dangdang.ddframe.rdb.sharding.util.ThrowableSQLExceptionMethod;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.util.Collection;
/**
* 数据库连接适配类.
*
* @author zhangliang
*/
public abstract class AbstractConnectionAdapter extends AbstractUnsupportedOperationConnection {
private boolean autoCommit = true;
private boolean readOnly = true;
private boolean closed;
private int transactionIsolation = TRANSACTION_READ_UNCOMMITTED;
protected abstract Collection<Connection> getConnections();
@Override
public final boolean getAutoCommit() throws SQLException {
return autoCommit;
}
@Override
public final void setAutoCommit(final boolean autoCommit) throws SQLException {
this.autoCommit = autoCommit;
if (getConnections().isEmpty()) {
recordMethodInvocation(Connection.class, "setAutoCommit", new Class[] {boolean.class}, new Object[] {autoCommit});
return;
}
for (Connection each : getConnections()) {
each.setAutoCommit(autoCommit);
}
}
@Override
public final void commit() throws SQLException {
for (Connection each : getConnections()) {
each.commit();
}
}
@Override
public final void rollback() throws SQLException {
SQLUtil.safeInvoke(getConnections(), new ThrowableSQLExceptionMethod<Connection>() {
@Override
public void apply(final Connection object) throws SQLException {
object.rollback();
}
});
}
@Override
public void close() throws SQLException {
SQLUtil.safeInvoke(getConnections(), new ThrowableSQLExceptionMethod<Connection>() {
@Override
public void apply(final Connection object) throws SQLException {
object.close();
}
});
closed = true;
MetricsContext.clear();
}
@Override
public final boolean isClosed() throws SQLException {
return closed;
}
@Override
public final boolean isReadOnly() throws SQLException {
return readOnly;
}
@Override
public final void setReadOnly(final boolean readOnly) throws SQLException {
this.readOnly = readOnly;
if (getConnections().isEmpty()) {
recordMethodInvocation(Connection.class, "setReadOnly", new Class[] {boolean.class}, new Object[] {readOnly});
return;
}
for (Connection each : getConnections()) {
each.setReadOnly(readOnly);
}
}
@Override
public final int getTransactionIsolation() throws SQLException {
return transactionIsolation;
}
@Override
public final void setTransactionIsolation(final int level) throws SQLException {
transactionIsolation = level;
if (getConnections().isEmpty()) {
recordMethodInvocation(Connection.class, "setTransactionIsolation", new Class[] {int.class}, new Object[] {level});
return;
}
for (Connection each : getConnections()) {
each.setTransactionIsolation(level);
}
}
// -------以下代码与MySQL实现保持一致.-------
@Override
public SQLWarning getWarnings() throws SQLException {
return null;
}
@Override
public void clearWarnings() throws SQLException {
}
@Override
public final int getHoldability() throws SQLException {
return ResultSet.CLOSE_CURSORS_AT_COMMIT;
}
@Override
public final void setHoldability(final int holdability) throws SQLException {
}
}