package com.taobao.tddl.group.jdbc;
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.Connection;
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.Calendar;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import com.taobao.tddl.atom.jdbc.SqlMetaDataFactory;
import com.taobao.tddl.atom.jdbc.TPreparedStatement;
import com.taobao.tddl.common.jdbc.ParameterContext;
import com.taobao.tddl.common.jdbc.ParameterMethod;
import com.taobao.tddl.common.jdbc.Parameters;
import com.taobao.tddl.common.jdbc.SqlTypeParser;
import com.taobao.tddl.common.model.SqlType;
import com.taobao.tddl.group.config.GroupIndex;
import com.taobao.tddl.group.dbselector.DBSelector.AbstractDataSourceTryer;
import com.taobao.tddl.group.dbselector.DBSelector.DataSourceTryer;
import com.taobao.tddl.group.utils.GroupHintParser;
import com.taobao.tddl.common.utils.logger.Logger;
import com.taobao.tddl.common.utils.logger.LoggerFactory;
/**
* @author linxuan
* @author yangzhu
*/
public class TGroupPreparedStatement extends TGroupStatement implements TPreparedStatement {
private static final Logger log = LoggerFactory.getLogger(TGroupPreparedStatement.class);
private String sql;
public TGroupPreparedStatement(TGroupDataSource tGroupDataSource, TGroupConnection tGroupConnection, String sql){
super(tGroupDataSource, tGroupConnection);
this.sql = sql;
}
private int autoGeneratedKeys = -1;
private int[] columnIndexes;
private String[] columnNames;
// 参数列表到参数上下文的映射 如 1:name 2：'2011-11-11'
protected Map<Integer, ParameterContext> parameterSettings = new HashMap<Integer, ParameterContext>();
public void clearParameters() throws SQLException {
parameterSettings.clear();
}
private PreparedStatement createPreparedStatementInternal(Connection conn, String sql) throws SQLException {
PreparedStatement ps;
if (autoGeneratedKeys != -1) {
ps = conn.prepareStatement(sql, autoGeneratedKeys);
} else if (columnIndexes != null) {
ps = conn.prepareStatement(sql, columnIndexes);
} else if (columnNames != null) {
ps = conn.prepareStatement(sql, columnNames);
} else {
int resultSetHoldability = this.resultSetHoldability;
if (resultSetHoldability == -1) // 未调用过setResultSetHoldability
resultSetHoldability = conn.getHoldability();
ps = conn.prepareStatement(sql, this.resultSetType, this.resultSetConcurrency, resultSetHoldability);
}
setBaseStatement(ps);
ps.setQueryTimeout(queryTimeout); // 这句可能抛出异常，所以要放到setBaseStatement之后
ps.setFetchSize(fetchSize);
ps.setMaxRows(maxRows);
fillSqlMetaData(ps, sql);
return ps;
}
public boolean execute() throws SQLException {
if (log.isDebugEnabled()) {
log.debug("invoke execute, sql = " + sql);
}
if (SqlTypeParser.isQuerySql(sql)) {
executeQuery();
return true;
} else {
super.updateCount = executeUpdate();
return false;
}
}
/*
* ========================================================================
* executeQuery逻辑
* ======================================================================
*/
public ResultSet executeQuery() throws SQLException {
checkClosed();
ensureResultSetIsEmpty();
boolean gotoRead = SqlType.SELECT.equals(SqlTypeParser.getSqlType(sql)) && tGroupConnection.getAutoCommit();
Connection conn = tGroupConnection.getBaseConnection(sql, gotoRead);
if (conn != null) {
sql = GroupHintParser.removeTddlGroupHint(sql);
return executeQueryOnConnection(conn, sql);
} else {
// hint优先
GroupIndex dataSourceIndex = GroupHintParser.convertHint2Index(sql);
sql = GroupHintParser.removeTddlGroupHint(sql);
if (dataSourceIndex == null) {
dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
}
return tGroupDataSource.getDBSelector(gotoRead).tryExecute(executeQueryTryer,
retryingTimes,
sql,
dataSourceIndex);
}
}
@Override
protected ResultSet executeQueryOnConnection(Connection conn, String sql) throws SQLException {
PreparedStatement ps = createPreparedStatementInternal(conn, sql);
Parameters.setParameters(ps, parameterSettings);
this.currentResultSet = ps.executeQuery();
return this.currentResultSet;
}
/*
* ========================================================================
* executeUpdate逻辑
* ======================================================================
*/
public int executeUpdate() throws SQLException {
checkClosed();
ensureResultSetIsEmpty();
Connection conn = tGroupConnection.getBaseConnection(sql, false);
if (conn != null) {
sql = GroupHintParser.removeTddlGroupHint(sql);
// #bug 2011-10-28,modify by junyu,updateCount not set,fixed
int updateCount = executeUpdateOnConnection(conn);
super.updateCount = updateCount;
return updateCount;
} else {
// hint优先
GroupIndex dataSourceIndex = GroupHintParser.convertHint2Index(sql);
sql = GroupHintParser.removeTddlGroupHint(sql);
if (dataSourceIndex == null) {
dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
}
// #bug 2011-10-28,modify by junyu,updateCount not set,fixed
int updateCount = tGroupDataSource.getDBSelector(false).tryExecute(null,
executeUpdateTryer,
retryingTimes,
sql,
dataSourceIndex);
super.updateCount = updateCount;
return updateCount;
}
}
private int executeUpdateOnConnection(Connection conn) throws SQLException {
PreparedStatement ps = createPreparedStatementInternal(conn, sql);
Parameters.setParameters(ps, parameterSettings);
return ps.executeUpdate();
}
private DataSourceTryer<Integer> executeUpdateTryer = new AbstractDataSourceTryer<Integer>() {
public Integer tryOnDataSource(DataSourceWrapper dsw,
Object... args)
throws SQLException {
Connection conn = TGroupPreparedStatement.this.tGroupConnection.createNewConnection(dsw,
false);
return executeUpdateOnConnection(conn);
}
};
public ResultSetMetaData getMetaData() throws SQLException {
throw new UnsupportedOperationException("getMetaData");
}
public ParameterMetaData getParameterMetaData() throws SQLException {
throw new UnsupportedOperationException("getParameterMetaData");
}
/*
* ========================================================================
* setxxx SQL参数设置
* ======================================================================
*/
public void setArray(int parameterIndex, Array x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setArray, new Object[] { parameterIndex, x }));
}
public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setAsciiStream, new Object[] {
parameterIndex, x, length }));
}
public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBigDecimal, new Object[] {
parameterIndex, x }));
}
public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBinaryStream, new Object[] {
parameterIndex, x, length }));
}
public void setBlob(int parameterIndex, Blob x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBlob, new Object[] { parameterIndex, x }));
}
public void setBoolean(int parameterIndex, boolean x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBoolean, new Object[] {
parameterIndex, x }));
}
public void setByte(int parameterIndex, byte x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setByte, new Object[] {
parameterIndex, x }));
}
public void setBytes(int parameterIndex, byte[] x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBytes, new Object[] {
parameterIndex, x }));
}
public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setCharacterStream, new Object[] {
parameterIndex, reader, length }));
}
public void setClob(int parameterIndex, Clob x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setClob, new Object[] { parameterIndex, x }));
}
public void setDate(int parameterIndex, Date x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDate1, new Object[] {
parameterIndex, x }));
}
public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDate2, new Object[] {
parameterIndex, x, cal }));
}
public void setDouble(int parameterIndex, double x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDouble, new Object[] {
parameterIndex, x }));
}
public void setFloat(int parameterIndex, float x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setFloat, new Object[] {
parameterIndex, x }));
}
public void setInt(int parameterIndex, int x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setInt, new Object[] {
parameterIndex, x }));
}
public void setLong(int parameterIndex, long x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setLong, new Object[] {
parameterIndex, x }));
}
public void setNull(int parameterIndex, int sqlType) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNull1, new Object[] {
parameterIndex, sqlType }));
}
public void setNull(int paramIndex, int sqlType, String typeName) throws SQLException {
parameterSettings.put(paramIndex, new ParameterContext(ParameterMethod.setNull2, new Object[] { paramIndex,
sqlType, typeName }));
}
public void setObject(int parameterIndex, Object x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setObject1, new Object[] {
parameterIndex, x }));
}
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setObject2, new Object[] {
parameterIndex, x, targetSqlType }));
}
public void setObject(int parameterIndex, Object x, int targetSqlType, int scale) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setObject3, new Object[] {
parameterIndex, x, targetSqlType, scale }));
}
public void setRef(int parameterIndex, Ref x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setRef, new Object[] { parameterIndex, x }));
}
public void setShort(int parameterIndex, short x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setShort, new Object[] {
parameterIndex, x }));
}
public void setString(int parameterIndex, String x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setString, new Object[] {
parameterIndex, x }));
}
public void setTime(int parameterIndex, Time x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTime1, new Object[] {
parameterIndex, x }));
}
public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTime2, new Object[] {
parameterIndex, x, cal }));
}
public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTimestamp1, new Object[] {
parameterIndex, x }));
}
public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTimestamp2, new Object[] {
parameterIndex, x, cal }));
}
public void setURL(int parameterIndex, URL x) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setURL, new Object[] {
parameterIndex, x }));
}
@Deprecated
public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setUnicodeStream, new Object[] {
parameterIndex, x, length }));
}
/*
* ========================================================================
* executeBatch
* ======================================================================
*/
private List<Map<Integer, ParameterContext>> pstArgs;
public void addBatch() throws SQLException {
if (pstArgs == null) {
pstArgs = new LinkedList<Map<Integer, ParameterContext>>();
}
Map<Integer, ParameterContext> newArg = new HashMap<Integer, ParameterContext>(parameterSettings.size());
newArg.putAll(parameterSettings);
parameterSettings.clear();
pstArgs.add(newArg);
}
public int[] executeBatch() throws SQLException {
try {
checkClosed();
ensureResultSetIsEmpty();
if (pstArgs == null || pstArgs.isEmpty()) {
return new int[0];
}
Connection conn = tGroupConnection.getBaseConnection(sql, false);
if (conn != null) {
sql = GroupHintParser.removeTddlGroupHint(sql);
// 如果当前已经有连接,则不做任何重试。对于更新来说，不管有没有事务，
// 用户总期望getConnection获得连接之后，后续的一系列操作都在这同一个库，同一个连接上执行
return executeBatchOnConnection(conn);
} else {
GroupIndex dataSourceIndex = GroupHintParser.convertHint2Index(sql);
sql = GroupHintParser.removeTddlGroupHint(sql);
if (dataSourceIndex == null) {
dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
}
return tGroupDataSource.getDBSelector(false).tryExecute(null,
executeBatchTryer,
retryingTimes,
dataSourceIndex);
}
} finally {
if (pstArgs != null) {
pstArgs.clear();
}
}
}
private DataSourceTryer<int[]> executeBatchTryer = new AbstractDataSourceTryer<int[]>() {
public int[] tryOnDataSource(DataSourceWrapper dsw,
Object... args)
throws SQLException {
Connection conn = tGroupConnection.createNewConnection(dsw,
false);
return executeBatchOnConnection(conn);
}
};
// TODO 重试中Statement的关闭
private int[] executeBatchOnConnection(Connection conn) throws SQLException {
PreparedStatement ps = createPreparedStatementInternal(conn, sql);
for (Map<Integer, ParameterContext> parameterSettings : pstArgs) {
setBatchParameters(ps, parameterSettings.values());
ps.addBatch();
}
return ps.executeBatch();
}
private static void setBatchParameters(PreparedStatement ps, Collection<ParameterContext> batchedParameters)
throws SQLException {
for (ParameterContext context : batchedParameters) {
context.getParameterMethod().setParameter(ps, context.getArgs());
}
}
/*
* ========================================================================
* 无逻辑的getter/setter
* ======================================================================
*/
public int getAutoGeneratedKeys() {
return autoGeneratedKeys;
}
public void setAutoGeneratedKeys(int autoGeneratedKeys) {
this.autoGeneratedKeys = autoGeneratedKeys;
}
public int[] getColumnIndexes() {
return columnIndexes;
}
public void setColumnIndexes(int[] columnIndexes) {
this.columnIndexes = columnIndexes;
}
public String[] getColumnNames() {
return columnNames;
}
public void setColumnNames(String[] columnNames) {
this.columnNames = columnNames;
}
public boolean isClosed() throws SQLException {
throw new SQLException("not support exception");
}
public void setPoolable(boolean poolable) throws SQLException {
throw new SQLException("not support exception");
}
public boolean isPoolable() throws SQLException {
throw new SQLException("not support exception");
}
public <T> T unwrap(Class<T> iface) throws SQLException {
throw new SQLException("not support exception");
}
public boolean isWrapperFor(Class<?> iface) throws SQLException {
throw new SQLException("not support exception");
}
public void setRowId(int parameterIndex, RowId x) throws SQLException {
throw new SQLException("not support exception");
}
public void setNString(int parameterIndex, String value) throws SQLException {
throw new SQLException("not support exception");
}
public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setNClob(int parameterIndex, NClob value) throws SQLException {
throw new SQLException("not support exception");
}
public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
throw new SQLException("not support exception");
}
public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
throw new SQLException("not support exception");
}
public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
throw new SQLException("not support exception");
}
public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
throw new SQLException("not support exception");
}
public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
throw new SQLException("not support exception");
}
public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
throw new SQLException("not support exception");
}
public void setClob(int parameterIndex, Reader reader) throws SQLException {
throw new SQLException("not support exception");
}
public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
throw new SQLException("not support exception");
}
public void setNClob(int parameterIndex, Reader reader) throws SQLException {
throw new SQLException("not support exception");
}
protected void fillSqlMetaData(PreparedStatement ps, String sql) {
if (ps instanceof TPreparedStatement) fillSqlMetaData((TPreparedStatement) ps, sql);
}
/**
* 往TPreparedStatement里注入sql元信息
*
* @param ps
*/
protected void fillSqlMetaData(TPreparedStatement ps, String sql) {
if (this.sqlMetaData == null) {
this.sqlMetaData = SqlMetaDataFactory.getSqlMetaData(sql);
}
ps.fillMetaData(this.sqlMetaData);
}
}