com.github.javaclub.cdl.client.group.SGroupPreparedStatement Maven / Gradle / Ivy

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package com.github.javaclub.cdl.client.group;

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.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import com.github.javaclub.cdl.client.common.DataSourceWrapper;
import com.github.javaclub.cdl.client.common.ExceptionSorter;
import com.github.javaclub.cdl.client.common.SQLParser;
import com.github.javaclub.cdl.client.common.SqlType;
import com.github.javaclub.cdl.client.common.ThreadLocalDataSourceIndex;
import com.github.javaclub.cdl.client.group.DBSelector.DataSourceTryer;
import com.github.javaclub.cdl.client.parameter.ParameterContext;
import com.github.javaclub.cdl.client.parameter.ParameterMethod;
import com.github.javaclub.cdl.client.parameter.Parameters;
import com.github.javaclub.cdl.client.util.ExceptionUtils;
import com.github.javaclub.cdl.client.util.GroupHintParser;
import com.github.javaclub.cdl.client.util.SQLMonitors;


public class SGroupPreparedStatement extends SGroupStatement implements PreparedStatement {

	private String sql;

	private int autoGeneratedKeys = -1;
	private int[] columnIndexes;
	private String[] columnNames;
	private List> pstArgs;

	protected Map parameterSettings = new HashMap();

	public SGroupPreparedStatement(SGroupDataSource sGroupDataSource, SGroupConnection sGroupConnection, String sql) {
		super(sGroupDataSource, sGroupConnection);
		this.sql = sql;
	}

	/*---------------------- jdbc规范 ---------------------*/
	@Override
	public ResultSet executeQuery() throws SQLException {
		boolean result = true;
		try{
			SQLMonitors.entry(sql);
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.beginTrace(sql,sGroupDataSource.getGroupName());
			}
			checkClosed();
			ensureResultSetIsEmpty();
			boolean isSelect = SqlType.SELECT.equals(SQLParser.getSqlType(sql));
			boolean gotoRead = isSelect && sGroupConnection.getAutoCommit(); 
			synchronized (sGroupConnection) { // 同一个连接上面执行多次时，要顺序执行，否则有并发问题
				Connection conn = sGroupConnection.getBaseConnection(sql, gotoRead);

				if (conn != null) {
					sql = GroupHintParser.removeCdlGroupHint(sql);
					return executeQueryOnConnection(conn, sql);
				} else {
					Integer dataSourceIndex = GroupHintParser.convertHint2Index(sql);
					sql = GroupHintParser.removeCdlGroupHint(sql);
					if (dataSourceIndex < 0) {
						dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
					}
					if(!gotoRead && isSelect){  // 事务里面的查询先强制走主库
						try{
							return sGroupDataSource.getDBSelector(false).tryExecute(executeQueryTryer, retryingTimes, sql, dataSourceIndex);
						}catch(Exception e){
						}
						// 事务里面的查询前面没有找到主库，重试一次从库
						return this.sGroupDataSource.getDBSelector(true).tryExecute(executeQueryTryer, retryingTimes, sql, dataSourceIndex);
					}
					
					return this.sGroupDataSource.getDBSelector(gotoRead).tryExecute(executeQueryTryer, retryingTimes, sql, dataSourceIndex);
				}
			}
		} catch(SQLException e){
			result = false;
			throw e;
		} finally{
			SQLMonitors.exit(sql, result);
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.endTrace(null);
			}
		}
	}

	@Override
	public int executeUpdate() throws SQLException {
		boolean result = true;
		try{
			SQLMonitors.entry(sql);
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.beginTrace(sql,sGroupDataSource.getGroupName());
			}
			checkClosed();
			ensureResultSetIsEmpty();
  
			synchronized (sGroupConnection) {  // 同一个连接上面执行多次时，要顺序执行，否则有并发问题
				Connection conn = sGroupConnection.getBaseConnection(sql, false);

				if (conn != null) {
					sql = GroupHintParser.removeCdlGroupHint(sql);
					int updateCount = executeUpdateOnConnection(conn);
					super.updateCount = updateCount;
					return updateCount;
				} else {
					Integer dataSourceIndex = GroupHintParser.convertHint2Index(sql);
					sql = GroupHintParser.removeCdlGroupHint(sql);
					if (dataSourceIndex < 0) {
						dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
					}
					int updateCount = sGroupDataSource.getDBSelector(false).tryExecute(null, executeUpdateTryer, retryingTimes, sql,
							dataSourceIndex);
					super.updateCount = updateCount;
					return updateCount;
				}
			}
			
		} catch(SQLException e){
			result = false;
			throw e;
		} finally{
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.endTrace(null);
			}
			SQLMonitors.exit(sql, result);
		}
	}

	@Override
	public boolean execute() throws SQLException {
		//boolean result = true;
		try{
			//SQLMonitors.entry(sql);
			SqlType sqlType = SQLParser.getSqlType(sql);
			if (sqlType == SqlType.SELECT || sqlType == SqlType.SELECT_FOR_UPDATE || sqlType == SqlType.SHOW) {
				executeQuery();
				return true;
			} else if (sqlType == SqlType.INSERT || sqlType == SqlType.UPDATE || sqlType == SqlType.DELETE || sqlType == SqlType.REPLACE
					|| sqlType == SqlType.TRUNCATE || sqlType == SqlType.CREATE || sqlType == SqlType.DROP || sqlType == SqlType.LOAD
					|| sqlType == SqlType.MERGE) {
				super.updateCount = executeUpdate();
				return false;
			} else {
				throw new SQLException("only select, insert, update, delete,truncate,create,drop,load,merge sql is supported");
			}
		} catch(SQLException e){
			//result = false;
			throw e;
		} finally{
			//SQLMonitors.exit(sql, result);
		}
	}

	@Override
	public void addBatch() throws SQLException {
		if (pstArgs == null) {
			pstArgs = new LinkedList>();
		}
		Map newArg = new HashMap(parameterSettings.size());
		newArg.putAll(parameterSettings);
		parameterSettings.clear();
		pstArgs.add(newArg);
	}

	@Override
	public int[] executeBatch() throws SQLException {
		boolean result = true;
		try {
			SQLMonitors.entry(sql);
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.beginTrace(sql,sGroupDataSource.getGroupName());
			}
			checkClosed();
			ensureResultSetIsEmpty();

			if (pstArgs == null || pstArgs.isEmpty()) {
				return new int[0];
			}

			synchronized (sGroupConnection) {  // 同一个连接上面执行多次时，要顺序执行，否则有并发问题
				Connection conn = sGroupConnection.getBaseConnection(sql, false);

				if (conn != null) {
					sql = GroupHintParser.removeCdlGroupHint(sql);
					return executeBatchOnConnection(conn);
				} else {
					Integer dataSourceIndex = GroupHintParser.convertHint2Index(sql);
					sql = GroupHintParser.removeCdlGroupHint(sql);
					if (dataSourceIndex < 0) {
						dataSourceIndex = ThreadLocalDataSourceIndex.getIndex();
					}
					return sGroupDataSource.getDBSelector(false).tryExecute(null, executeBatchTryer, retryingTimes, dataSourceIndex);
				}
			}
			
		} catch(SQLException e){
			result = false;
			throw e;
		} finally {
			if(sGroupDataSource.getDbConfigManager().isEnableTrace()){
				//CDLBraveTrace.endTrace(null);
			}
			SQLMonitors.exit(sql, result);
			if (pstArgs != null)
				pstArgs.clear();
		}
	}

	@Override
	public void setNull(int parameterIndex, int sqlType) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNull1, new Object[] { parameterIndex, sqlType }));
	}

	@Override
	public void setBoolean(int parameterIndex, boolean x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBoolean, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setByte(int parameterIndex, byte x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setByte, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setShort(int parameterIndex, short x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setShort, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setInt(int parameterIndex, int x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setInt, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setLong(int parameterIndex, long x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setLong, new Object[] { parameterIndex, x }));

	}

	@Override
	public void setFloat(int parameterIndex, float x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setFloat, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setDouble(int parameterIndex, double x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDouble, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBigDecimal, new Object[] { parameterIndex, x }));

	}

	@Override
	public void setString(int parameterIndex, String x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setString, new Object[] { parameterIndex, x }));

	}

	@Override
	public void setBytes(int parameterIndex, byte[] x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBytes, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setDate(int parameterIndex, Date x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDate1, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setTime(int parameterIndex, Time x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTime1, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTimestamp1, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setAsciiStream, new Object[] { parameterIndex, x,
				length }));
	}

	@Override
	public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setUnicodeStream, new Object[] { parameterIndex, x,
				length }));
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBinaryStream, new Object[] { parameterIndex, x,
				length }));
	}

	@Override
	public void clearParameters() throws SQLException {
		parameterSettings.clear();
	}

	@Override
	public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setObject2, new Object[] { parameterIndex, x,
				targetSqlType }));
	}

	@Override
	public void setObject(int parameterIndex, Object x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setObject1, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setCharacterStream, new Object[] { parameterIndex, reader, length }));
	}

	@Override
	public void setRef(int i, Ref x) throws SQLException {
		parameterSettings.put(i, new ParameterContext(ParameterMethod.setRef, new Object[] { i, x }));
	}

	@Override
	public void setBlob(int parameterIndex, Blob x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBlob, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setClob(int parameterIndex, Clob x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setClob, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setArray(int i, Array x) throws SQLException {
		parameterSettings.put(i, new ParameterContext(ParameterMethod.setArray, new Object[] { i, x }));
	}

	@Override
	public ResultSetMetaData getMetaData() throws SQLException {
		throw new UnsupportedOperationException("getMetaData");
	}

	@Override
	public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setDate2, new Object[] { parameterIndex, x, cal }));
	}

	@Override
	public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTime2, new Object[] { parameterIndex, x, cal }));
	}

	@Override
	public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setTimestamp2, new Object[] { parameterIndex, x, cal }));
	}

	@Override
	public void setNull(int paramIndex, int sqlType, String typeName) throws SQLException {
		parameterSettings.put(paramIndex, new ParameterContext(ParameterMethod.setNull2, new Object[] { paramIndex, sqlType, typeName }));
	}

	@Override
	public void setURL(int parameterIndex, URL x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setURL, new Object[] { parameterIndex, x }));
	}

	@Override
	public ParameterMetaData getParameterMetaData() throws SQLException {
		throw new UnsupportedOperationException("getParameterMetaData");
	}

	@Override
	public void setRowId(int parameterIndex, RowId x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setRowId, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setNString(int parameterIndex, String value) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNString, new Object[] { parameterIndex, value }));
	}

	@Override
	public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNCharacterStream, new Object[] { parameterIndex, value,length }));
	}

	@Override
	public void setNClob(int parameterIndex, NClob value) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNClob, new Object[] { parameterIndex, value }));
	}

	@Override
	public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setClob2, new Object[] { parameterIndex, reader,length }));
	}

	@Override
	public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBlob2, new Object[] { parameterIndex, inputStream,length }));
	}

	@Override
	public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNClob2, new Object[] { parameterIndex, reader,length }));
	}

	@Override
	public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
		throw new SQLException("not support exception");
	}

	@Override
	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 }));
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setAsciiStream2, new Object[] { parameterIndex, x,
				length }));
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBinaryStream2, new Object[] { parameterIndex, x,
				length }));
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setCharacterStream2, new Object[] { parameterIndex, reader,
				length }));
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setAsciiStream3, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBinaryStream3, new Object[] { parameterIndex, x }));
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setCharacterStream3, new Object[] { parameterIndex, reader }));
	}

	@Override
	public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNCharacterStream2, new Object[] { parameterIndex, value }));
	}

	@Override
	public void setClob(int parameterIndex, Reader reader) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setClob3, new Object[] { parameterIndex, reader }));
	}

	@Override
	public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setBlob3, new Object[] { parameterIndex, inputStream }));
	}

	@Override
	public void setNClob(int parameterIndex, Reader reader) throws SQLException {
		parameterSettings.put(parameterIndex, new ParameterContext(ParameterMethod.setNClob3, new Object[] { parameterIndex, reader }));
	}

	/*---------------------- jdbc规范 ---------------------*/

	@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;
	}

	private int[] executeBatchOnConnection(Connection conn) throws SQLException {
		PreparedStatement ps = createPreparedStatementInternal(conn, sql);
		for (Map parameterSettings : pstArgs) {
			setBatchParameters(ps, parameterSettings.values());
			ps.addBatch();
		}
		return ps.executeBatch();
	}

	private static void setBatchParameters(PreparedStatement ps, Collection batchedParameters) throws SQLException {
		for (ParameterContext context : batchedParameters) {
			Parameters.parameterHandlers.get(context.getParameterMethod()).setParameter(ps, context.getArgs());
		}
	}

	private int executeUpdateOnConnection(Connection conn) throws SQLException {
		PreparedStatement ps = createPreparedStatementInternal(conn, sql);
		Parameters.setParameters(ps, parameterSettings);
		return ps.executeUpdate();
	}

	private DataSourceTryer executeUpdateTryer = new DataSourceTryer() {
		@SuppressWarnings("unchecked")
		@Override
		public Integer onSQLException(List exceptions, ExceptionSorter exceptionSorter, Object... args) throws SQLException {
			ExceptionUtils.throwSQLException(exceptions, null, Collections.EMPTY_LIST);
			return null;
		}

		@Override
		public Integer tryOnDataSource(DataSourceWrapper dsw, Object... args) throws SQLException {
			Connection conn = SGroupPreparedStatement.this.sGroupConnection.createNewConnection(dsw, false);
			return executeUpdateOnConnection(conn);
		}
	};

	private DataSourceTryer executeBatchTryer = new DataSourceTryer() {
		@SuppressWarnings("unchecked")
		@Override
		public int[] onSQLException(List exceptions, ExceptionSorter exceptionSorter, Object... args) throws SQLException {
			ExceptionUtils.throwSQLException(exceptions, null, Collections.EMPTY_LIST);
			return null;
		}

		@Override
		public int[] tryOnDataSource(DataSourceWrapper dsw, Object... args) throws SQLException {
			Connection conn = sGroupConnection.createNewConnection(dsw, false);
			return executeBatchOnConnection(conn);
		}
	};

	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)
				resultSetHoldability = conn.getHoldability();

			ps = conn.prepareStatement(sql, this.resultSetType, this.resultSetConcurrency, resultSetHoldability);
		}
		setBaseStatement(ps);
		ps.setQueryTimeout(queryTimeout);
		ps.setFetchSize(fetchSize);
		ps.setMaxRows(maxRows);

		return ps;
	}

	public String getSql() {
		return sql;
	}

	public void setSql(String sql) {
		this.sql = sql;
	}

	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 List> getPstArgs() {
		return pstArgs;
	}

	public void setPstArgs(List> pstArgs) {
		this.pstArgs = pstArgs;
	}

	public Map getParameterSettings() {
		return parameterSettings;
	}

	public void setParameterSettings(Map parameterSettings) {
		this.parameterSettings = parameterSettings;
	}

	public DataSourceTryer getExecuteUpdateTryer() {
		return executeUpdateTryer;
	}

	public void setExecuteUpdateTryer(DataSourceTryer executeUpdateTryer) {
		this.executeUpdateTryer = executeUpdateTryer;
	}

}