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An JDBC datasource implementation.
/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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 com.alibaba.druid.pool;
import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.NClob;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLXML;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Arrays;
import java.util.Calendar;
import com.alibaba.druid.pool.PreparedStatementPool.MethodType;
import com.alibaba.druid.support.logging.Log;
import com.alibaba.druid.support.logging.LogFactory;
import com.alibaba.druid.util.OracleUtils;
/**
* @author wenshao
*/
public class DruidPooledPreparedStatement extends DruidPooledStatement implements PreparedStatement {
private final static Log LOG = LogFactory.getLog(DruidPooledPreparedStatement.class);
private final PreparedStatementHolder holder;
private final PreparedStatement stmt;
private final String sql;
private int defaultMaxFieldSize;
private int defaultMaxRows;
private int defaultQueryTimeout;
private int defaultFetchDirection;
private int defaultFetchSize;
private int currentMaxFieldSize;
private int currentMaxRows;
private int currentQueryTimeout;
private int currentFetchDirection;
private int currentFetchSize;
public DruidPooledPreparedStatement(DruidPooledConnection conn, PreparedStatementHolder holder) throws SQLException{
super(conn, holder.getStatement());
this.stmt = holder.getStatement();
this.holder = holder;
this.sql = holder.getKey().sql;
// Remember the defaults
try {
defaultMaxFieldSize = stmt.getMaxFieldSize();
} catch (SQLException e) {
LOG.error("getMaxFieldSize error", e);
}
try {
defaultMaxRows = stmt.getMaxRows();
} catch (SQLException e) {
LOG.error("getMaxRows error", e);
}
try {
defaultQueryTimeout = stmt.getQueryTimeout();
} catch (SQLException e) {
LOG.error("getMaxRows error", e);
}
try {
defaultFetchDirection = stmt.getFetchDirection();
} catch (SQLException e) {
LOG.error("getFetchDirection error", e);
}
try {
defaultFetchSize = stmt.getFetchSize();
} catch (SQLException e) {
LOG.error("getFetchSize error", e);
}
currentMaxFieldSize = defaultMaxFieldSize;
currentMaxRows = defaultMaxRows;
currentQueryTimeout = defaultQueryTimeout;
currentFetchDirection = defaultFetchDirection;
currentFetchSize = defaultFetchSize;
}
public PreparedStatementHolder getPreparedStatementHolder() {
return holder;
}
public int getHitCount() {
return holder.getHitCount();
}
public void setFetchSize(int rows) throws SQLException {
currentFetchSize = rows;
super.setFetchSize(rows);
}
public void setFetchDirection(int direction) throws SQLException {
currentFetchDirection = direction;
super.setFetchDirection(direction);
}
public void setMaxFieldSize(int max) throws SQLException {
currentMaxFieldSize = max;
super.setMaxFieldSize(max);
}
public void setMaxRows(int max) throws SQLException {
currentMaxRows = max;
super.setMaxRows(max);
}
public void setQueryTimeout(int seconds) throws SQLException {
currentQueryTimeout = seconds;
super.setQueryTimeout(seconds);
}
public String getSql() {
return sql;
}
public PreparedStatementKey getKey() {
return holder.getKey();
}
public PreparedStatement getRawPreparedStatement() {
return stmt;
}
public PreparedStatement getRawStatement() {
return stmt;
}
@Override
public void close() throws SQLException {
if (isClosed()) {
return;
}
// Reset the defaults
if (defaultMaxFieldSize != currentMaxFieldSize) {
stmt.setMaxFieldSize(defaultMaxFieldSize);
currentMaxFieldSize = defaultMaxFieldSize;
}
if (defaultMaxRows != currentMaxRows) {
stmt.setMaxRows(defaultMaxRows);
currentMaxRows = defaultMaxRows;
}
if (defaultQueryTimeout != currentQueryTimeout) {
stmt.setQueryTimeout(defaultQueryTimeout);
currentQueryTimeout = defaultQueryTimeout;
}
if (defaultFetchDirection != currentFetchDirection) {
stmt.setFetchDirection(defaultFetchDirection);
currentFetchDirection = defaultFetchDirection;
}
if (defaultFetchSize != currentFetchSize) {
stmt.setFetchSize(defaultFetchSize);
currentFetchSize = defaultFetchSize;
}
conn.closePoolableStatement(this);
}
void closeInternal() throws SQLException {
super.close();
}
void setClosed(boolean value) {
this.closed = value;
}
@Override
public ResultSet executeQuery() throws SQLException {
checkOpen();
incrementExecuteCount();
transactionRecord(sql);
oracleSetRowPrefetch();
conn.beforeExecute();
try {
ResultSet rs = stmt.executeQuery();
if (rs == null) {
return null;
}
DruidPooledResultSet poolableResultSet = new DruidPooledResultSet(this, rs);
resultSetTrace.add(poolableResultSet);
return poolableResultSet;
} catch (Throwable t) {
throw checkException(t);
} finally {
conn.afterExecute();
}
}
@Override
public int executeUpdate() throws SQLException {
checkOpen();
incrementExecuteCount();
transactionRecord(sql);
conn.beforeExecute();
try {
return stmt.executeUpdate();
} catch (Throwable t) {
throw checkException(t);
} finally {
conn.afterExecute();
}
}
@Override
public void setNull(int parameterIndex, int sqlType) throws SQLException {
checkOpen();
try {
stmt.setNull(parameterIndex, sqlType);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBoolean(int parameterIndex, boolean x) throws SQLException {
checkOpen();
try {
stmt.setBoolean(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setByte(int parameterIndex, byte x) throws SQLException {
checkOpen();
try {
stmt.setByte(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setShort(int parameterIndex, short x) throws SQLException {
checkOpen();
try {
stmt.setShort(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setInt(int parameterIndex, int x) throws SQLException {
checkOpen();
try {
stmt.setInt(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setLong(int parameterIndex, long x) throws SQLException {
checkOpen();
try {
stmt.setLong(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setFloat(int parameterIndex, float x) throws SQLException {
checkOpen();
try {
stmt.setFloat(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setDouble(int parameterIndex, double x) throws SQLException {
checkOpen();
try {
stmt.setDouble(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
checkOpen();
try {
stmt.setBigDecimal(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setString(int parameterIndex, String x) throws SQLException {
checkOpen();
try {
stmt.setString(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBytes(int parameterIndex, byte[] x) throws SQLException {
checkOpen();
try {
stmt.setBytes(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setDate(int parameterIndex, Date x) throws SQLException {
checkOpen();
try {
stmt.setDate(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setTime(int parameterIndex, Time x) throws SQLException {
checkOpen();
try {
stmt.setTime(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
checkOpen();
try {
stmt.setTimestamp(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
checkOpen();
try {
stmt.setAsciiStream(parameterIndex, x, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
@Deprecated
public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
checkOpen();
try {
stmt.setUnicodeStream(parameterIndex, x, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
checkOpen();
try {
stmt.setBinaryStream(parameterIndex, x, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void clearParameters() throws SQLException {
checkOpen();
try {
stmt.clearParameters();
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
checkOpen();
try {
stmt.setObject(parameterIndex, x, targetSqlType);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setObject(int parameterIndex, Object x) throws SQLException {
checkOpen();
try {
stmt.setObject(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public boolean execute() throws SQLException {
checkOpen();
incrementExecuteCount();
transactionRecord(sql);
// oracleSetRowPrefetch();
conn.beforeExecute();
try {
return stmt.execute();
} catch (Throwable t) {
throw checkException(t);
} finally {
conn.afterExecute();
}
}
protected void oracleSetRowPrefetch() throws SQLException {
if (!conn.isOracle()) {
return;
}
if (holder.getHitCount() == 0) {
return;
}
int fetchRowPeak = holder.getFetchRowPeak();
if (fetchRowPeak < 0) {
return;
}
if (holder.getDefaultRowPretch() == -1) {
int defaultRowPretch = OracleUtils.getRowPrefetch(this);
if (defaultRowPretch != holder.getDefaultRowPretch()) {
holder.setDefaultRowPretch(defaultRowPretch);
holder.setRowPrefetch(defaultRowPretch);
}
}
int rowPrefetch;
if (fetchRowPeak <= 1) {
rowPrefetch = 2;
} else if (fetchRowPeak > holder.getDefaultRowPretch()) {
rowPrefetch = holder.getDefaultRowPretch();
} else {
rowPrefetch = fetchRowPeak + 1;
}
if (rowPrefetch != holder.getRowPrefetch()) {
OracleUtils.setRowPrefetch(this, rowPrefetch);
holder.setRowPrefetch(rowPrefetch);
}
}
@Override
public void addBatch() throws SQLException {
checkOpen();
try {
stmt.addBatch();
} catch (Throwable t) {
throw checkException(t);
}
}
public int[] executeBatch() throws SQLException {
checkOpen();
incrementExecuteCount();
transactionRecord(sql);
conn.beforeExecute();
try {
return stmt.executeBatch();
} catch (Throwable t) {
throw checkException(t);
} finally {
conn.afterExecute();
}
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
checkOpen();
try {
stmt.setCharacterStream(parameterIndex, reader, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setRef(int parameterIndex, Ref x) throws SQLException {
checkOpen();
try {
stmt.setRef(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBlob(int parameterIndex, Blob x) throws SQLException {
checkOpen();
try {
stmt.setBlob(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setClob(int parameterIndex, Clob x) throws SQLException {
checkOpen();
try {
stmt.setClob(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setArray(int parameterIndex, Array x) throws SQLException {
checkOpen();
try {
stmt.setArray(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public ResultSetMetaData getMetaData() throws SQLException {
checkOpen();
try {
return stmt.getMetaData();
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
checkOpen();
try {
stmt.setDate(parameterIndex, x, cal);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
checkOpen();
try {
stmt.setTime(parameterIndex, x, cal);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
checkOpen();
try {
stmt.setTimestamp(parameterIndex, x, cal);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNull(int parameterIndex, int sqlType, String typeName) throws SQLException {
checkOpen();
try {
stmt.setNull(parameterIndex, sqlType, typeName);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setURL(int parameterIndex, URL x) throws SQLException {
checkOpen();
try {
stmt.setURL(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public ParameterMetaData getParameterMetaData() throws SQLException {
checkOpen();
try {
return stmt.getParameterMetaData();
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setRowId(int parameterIndex, RowId x) throws SQLException {
checkOpen();
try {
stmt.setRowId(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNString(int parameterIndex, String value) throws SQLException {
checkOpen();
try {
stmt.setNString(parameterIndex, value);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
checkOpen();
try {
stmt.setNCharacterStream(parameterIndex, value, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNClob(int parameterIndex, NClob value) throws SQLException {
checkOpen();
try {
stmt.setNClob(parameterIndex, value);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
checkOpen();
try {
stmt.setClob(parameterIndex, reader, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
checkOpen();
try {
stmt.setBlob(parameterIndex, inputStream, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
checkOpen();
try {
stmt.setNClob(parameterIndex, reader, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
checkOpen();
try {
stmt.setSQLXML(parameterIndex, xmlObject);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setObject(int parameterIndex, Object x, int targetSqlType, int scaleOrLength) throws SQLException {
checkOpen();
try {
stmt.setObject(parameterIndex, x, targetSqlType, scaleOrLength);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
checkOpen();
try {
stmt.setAsciiStream(parameterIndex, x, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
checkOpen();
try {
stmt.setBinaryStream(parameterIndex, x, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
checkOpen();
try {
stmt.setCharacterStream(parameterIndex, reader, length);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
checkOpen();
try {
stmt.setAsciiStream(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
checkOpen();
try {
stmt.setBinaryStream(parameterIndex, x);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
checkOpen();
try {
stmt.setCharacterStream(parameterIndex, reader);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
checkOpen();
try {
stmt.setNCharacterStream(parameterIndex, value);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setClob(int parameterIndex, Reader reader) throws SQLException {
checkOpen();
try {
stmt.setClob(parameterIndex, reader);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
checkOpen();
try {
stmt.setBlob(parameterIndex, inputStream);
} catch (Throwable t) {
throw checkException(t);
}
}
@Override
public void setNClob(int parameterIndex, Reader reader) throws SQLException {
checkOpen();
try {
stmt.setNClob(parameterIndex, reader);
} catch (Throwable t) {
throw checkException(t);
}
}
public static class PreparedStatementKey {
private final String sql;
private final String catalog;
protected final MethodType methodType;
private final int resultSetType;
private final int resultSetConcurrency;
private final int resultSetHoldability;
private final int autoGeneratedKeys;
private final int[] columnIndexes;
private final String[] columnNames;
public PreparedStatementKey(String sql, String catalog, MethodType methodType) throws SQLException{
this(sql, catalog, methodType, 0, 0, 0, 0, null, null);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, int resultSetType,
int resultSetConcurrency) throws SQLException{
this(sql, catalog, methodType, resultSetType, resultSetConcurrency, 0, 0, null, null);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, int resultSetType,
int resultSetConcurrency, int resultSetHoldability) throws SQLException{
this(sql, catalog, methodType, resultSetType, resultSetConcurrency, resultSetHoldability, 0, null, null);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, int autoGeneratedKeys)
throws SQLException{
this(sql, catalog, methodType, 0, 0, 0, autoGeneratedKeys, null, null);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, int[] columnIndexes)
throws SQLException{
this(sql, catalog, methodType, 0, 0, 0, 0, columnIndexes, null);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, String[] columnNames)
throws SQLException{
this(sql, catalog, methodType, 0, 0, 0, 0, null, columnNames);
}
public PreparedStatementKey(String sql, String catalog, MethodType methodType, int resultSetType,
int resultSetConcurrency, int resultSetHoldability, int autoGeneratedKeys,
int[] columnIndexes, String[] columnNames) throws SQLException{
if (sql == null) {
throw new SQLException("sql is null");
}
this.sql = sql;
this.catalog = catalog;
this.methodType = methodType;
this.resultSetType = resultSetType;
this.resultSetConcurrency = resultSetConcurrency;
this.resultSetHoldability = resultSetHoldability;
this.autoGeneratedKeys = autoGeneratedKeys;
this.columnIndexes = columnIndexes;
this.columnNames = columnNames;
}
public int getResultSetType() {
return resultSetType;
}
public int getResultSetConcurrency() {
return resultSetConcurrency;
}
public int getResultSetHoldability() {
return resultSetHoldability;
}
public boolean equals(Object object) {
PreparedStatementKey that = (PreparedStatementKey) object;
if (!this.sql.equals(that.sql)) {
return false;
}
if (this.catalog == null) {
if (that.catalog != null) {
return false;
}
} else {
if (!this.catalog.equals(that.catalog)) {
return false;
}
}
if (this.methodType != that.methodType) {
return false;
}
if (this.resultSetType != that.resultSetType) {
return false;
}
if (this.resultSetConcurrency != that.resultSetConcurrency) {
return false;
}
if (this.resultSetHoldability != that.resultSetHoldability) {
return false;
}
if (this.autoGeneratedKeys != that.autoGeneratedKeys) {
return false;
}
if (!Arrays.equals(columnIndexes, that.columnIndexes)) {
return false;
}
if (!Arrays.equals(columnNames, that.columnNames)) {
return false;
}
return true;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((sql == null) ? 0 : sql.hashCode());
result = prime * result + ((catalog == null) ? 0 : catalog.hashCode());
result = prime * result + ((methodType == null) ? 0 : methodType.hashCode());
result = prime * result + resultSetConcurrency;
result = prime * result + resultSetHoldability;
result = prime * result + resultSetType;
result = prime * result + autoGeneratedKeys;
result = prime * result + Arrays.hashCode(columnIndexes);
result = prime * result + Arrays.hashCode(columnNames);
return result;
}
public String getSql() {
return sql;
}
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
if (iface == PreparedStatementHolder.class) {
return true;
}
return super.isWrapperFor(iface);
}
@SuppressWarnings("unchecked")
public T unwrap(Class iface) throws SQLException {
if (iface == PreparedStatementHolder.class) {
return (T) holder;
}
return super.unwrap(iface);
}
}