io.shardingsphere.core.jdbc.adapter.AbstractStatementAdapter Maven / Gradle / Ivy
/*
* Copyright 2016-2018 shardingsphere.io.
*
* 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.
*
*/
package io.shardingsphere.core.jdbc.adapter;
import io.shardingsphere.core.jdbc.adapter.executor.ForceExecuteCallback;
import io.shardingsphere.core.jdbc.adapter.executor.ForceExecuteTemplate;
import io.shardingsphere.core.jdbc.unsupported.AbstractUnsupportedOperationStatement;
import lombok.RequiredArgsConstructor;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
import java.util.Collection;
/**
* Adapter for {@code Statement}.
*
* @author zhangliang
* @author gaohongtao
*/
@RequiredArgsConstructor
public abstract class AbstractStatementAdapter extends AbstractUnsupportedOperationStatement {
private final Class targetClass;
private boolean closed;
private boolean poolable;
private int fetchSize;
private final ForceExecuteTemplate forceExecuteTemplate = new ForceExecuteTemplate<>();
@SuppressWarnings("unchecked")
@Override
public final void close() throws SQLException {
closed = true;
try {
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.close();
}
});
} finally {
getRoutedStatements().clear();
}
}
@Override
public final boolean isClosed() {
return closed;
}
@Override
public final boolean isPoolable() {
return poolable;
}
@SuppressWarnings("unchecked")
@Override
public final void setPoolable(final boolean poolable) throws SQLException {
this.poolable = poolable;
recordMethodInvocation(targetClass, "setPoolable", new Class[] {boolean.class}, new Object[] {poolable});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setPoolable(poolable);
}
});
}
@Override
public final int getFetchSize() {
return fetchSize;
}
@SuppressWarnings("unchecked")
@Override
public final void setFetchSize(final int rows) throws SQLException {
this.fetchSize = rows;
recordMethodInvocation(targetClass, "setFetchSize", new Class[] {int.class}, new Object[] {rows});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setFetchSize(rows);
}
});
}
@SuppressWarnings("unchecked")
@Override
public final void setEscapeProcessing(final boolean enable) throws SQLException {
recordMethodInvocation(targetClass, "setEscapeProcessing", new Class[] {boolean.class}, new Object[] {enable});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setEscapeProcessing(enable);
}
});
}
@SuppressWarnings("unchecked")
@Override
public final void cancel() throws SQLException {
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.cancel();
}
});
}
@Override
public final int getUpdateCount() throws SQLException {
long result = 0;
boolean hasResult = false;
for (Statement each : getRoutedStatements()) {
int updateCount = each.getUpdateCount();
if (updateCount > -1) {
hasResult = true;
}
result += updateCount;
}
if (result > Integer.MAX_VALUE) {
result = Integer.MAX_VALUE;
}
return hasResult ? Long.valueOf(result).intValue() : -1;
}
@Override
public final SQLWarning getWarnings() {
return null;
}
@Override
public final void clearWarnings() {
}
@Override
public final boolean getMoreResults() {
return false;
}
@Override
public final boolean getMoreResults(final int current) {
return false;
}
@Override
public final int getMaxFieldSize() throws SQLException {
return getRoutedStatements().isEmpty() ? 0 : getRoutedStatements().iterator().next().getMaxFieldSize();
}
@SuppressWarnings("unchecked")
@Override
public final void setMaxFieldSize(final int max) throws SQLException {
recordMethodInvocation(targetClass, "setMaxFieldSize", new Class[] {int.class}, new Object[] {max});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setMaxFieldSize(max);
}
});
}
// TODO Confirm MaxRows for multiple databases is need special handle. eg: 10 statements maybe MaxRows / 10
@Override
public final int getMaxRows() throws SQLException {
return getRoutedStatements().isEmpty() ? -1 : getRoutedStatements().iterator().next().getMaxRows();
}
@SuppressWarnings("unchecked")
@Override
public final void setMaxRows(final int max) throws SQLException {
recordMethodInvocation(targetClass, "setMaxRows", new Class[] {int.class}, new Object[] {max});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setMaxRows(max);
}
});
}
@Override
public final int getQueryTimeout() throws SQLException {
return getRoutedStatements().isEmpty() ? 0 : getRoutedStatements().iterator().next().getQueryTimeout();
}
@SuppressWarnings("unchecked")
@Override
public final void setQueryTimeout(final int seconds) throws SQLException {
recordMethodInvocation(targetClass, "setQueryTimeout", new Class[] {int.class}, new Object[] {seconds});
forceExecuteTemplate.execute((Collection) getRoutedStatements(), new ForceExecuteCallback() {
@Override
public void execute(final Statement statement) throws SQLException {
statement.setQueryTimeout(seconds);
}
});
}
protected abstract Collection getRoutedStatements();
}