/*
* Copyright 2009-2014 the original author or authors.
*
* 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 org.apache.ibatis.executor.resultset;
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import org.apache.ibatis.cache.CacheKey;
import org.apache.ibatis.executor.ErrorContext;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.executor.ExecutorException;
import org.apache.ibatis.executor.loader.ResultLoader;
import org.apache.ibatis.executor.loader.ResultLoaderMap;
import org.apache.ibatis.executor.parameter.ParameterHandler;
import org.apache.ibatis.executor.result.DefaultResultContext;
import org.apache.ibatis.executor.result.DefaultResultHandler;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.Discriminator;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.mapping.ParameterMode;
import org.apache.ibatis.mapping.ResultMap;
import org.apache.ibatis.mapping.ResultMapping;
import org.apache.ibatis.reflection.MetaClass;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.session.AutoMappingBehavior;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultContext;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.TypeHandler;
import org.apache.ibatis.type.TypeHandlerRegistry;
/**
* @author Clinton Begin
* @author Eduardo Macarron
*/
public class DefaultResultSetHandler implements ResultSetHandler {
private static final Object NO_VALUE = new Object();
private final Executor executor;
private final Configuration configuration;
private final MappedStatement mappedStatement;
private final RowBounds rowBounds;
private final ParameterHandler parameterHandler;
private final ResultHandler resultHandler;
private final BoundSql boundSql;
private final TypeHandlerRegistry typeHandlerRegistry;
private final ObjectFactory objectFactory;
// nested resultmaps
private final Map<CacheKey, Object> nestedResultObjects = new HashMap<CacheKey, Object>();
private final Map<CacheKey, Object> ancestorObjects = new HashMap<CacheKey, Object>();
private final Map<String, String> ancestorColumnPrefix = new HashMap<String, String>();
public static final String BATCHSAVE = ".BaseMapper.";
// multiple resultsets
private final Map<String, ResultMapping> nextResultMaps = new HashMap<String, ResultMapping>();
private final Map<CacheKey, List<PendingRelation>> pendingRelations = new HashMap<CacheKey, List<PendingRelation>>();
private static class PendingRelation {
public MetaObject metaObject;
public ResultMapping propertyMapping;
}
public DefaultResultSetHandler(Executor executor, MappedStatement mappedStatement, ParameterHandler parameterHandler, ResultHandler resultHandler, BoundSql boundSql,
RowBounds rowBounds) {
this.executor = executor;
this.configuration = mappedStatement.getConfiguration();
this.mappedStatement = mappedStatement;
this.rowBounds = rowBounds;
this.parameterHandler = parameterHandler;
this.boundSql = boundSql;
this.typeHandlerRegistry = configuration.getTypeHandlerRegistry();
this.objectFactory = configuration.getObjectFactory();
this.resultHandler = resultHandler;
}
//
// HANDLE OUTPUT PARAMETER
//
public void handleOutputParameters(CallableStatement cs) throws SQLException {
final Object parameterObject = parameterHandler.getParameterObject();
final MetaObject metaParam = configuration.newMetaObject(parameterObject);
final List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
for (int i = 0; i < parameterMappings.size(); i++) {
final ParameterMapping parameterMapping = parameterMappings.get(i);
if (parameterMapping.getMode() == ParameterMode.OUT || parameterMapping.getMode() == ParameterMode.INOUT) {
if (ResultSet.class.equals(parameterMapping.getJavaType())) {
handleRefCursorOutputParameter((ResultSet) cs.getObject(i + 1), parameterMapping, metaParam);
} else {
final TypeHandler<?> typeHandler = parameterMapping.getTypeHandler();
metaParam.setValue(parameterMapping.getProperty(), typeHandler.getResult(cs, i + 1));
}
}
}
}
private void handleRefCursorOutputParameter(ResultSet rs, ParameterMapping parameterMapping, MetaObject metaParam) throws SQLException {
try {
final String resultMapId = parameterMapping.getResultMapId();
final ResultMap resultMap = configuration.getResultMap(resultMapId);
final DefaultResultHandler resultHandler = new DefaultResultHandler(objectFactory);
final ResultSetWrapper rsw = new ResultSetWrapper(rs, configuration);
handleRowValues(rsw, resultMap, resultHandler, new RowBounds(), null);
metaParam.setValue(parameterMapping.getProperty(), resultHandler.getResultList());
} finally {
closeResultSet(rs); // issue #228 (close resultsets)
}
}
//
// HANDLE RESULT SETS
//
@SuppressWarnings({ "unchecked", "rawtypes" })
public List<Object> handleResultSets(Statement stmt) throws SQLException {
ErrorContext.instance().activity("handling results").object(mappedStatement.getId());
final List<Object> multipleResults = new ArrayList<Object>();
int resultSetCount = 0;
ResultSetWrapper rsw = getFirstResultSet(stmt);
List<ResultMap> resultMaps = mappedStatement.getResultMaps();
int resultMapCount = resultMaps.size();
validateResultMapsCount(rsw, resultMapCount);
while (rsw != null && resultMapCount > resultSetCount) {
ResultMap resultMap = resultMaps.get(resultSetCount);
handleResultSet(rsw, resultMap, multipleResults, null);
rsw = getNextResultSet(stmt);
cleanUpAfterHandlingResultSet();
resultSetCount++;
}
String[] resultSets = mappedStatement.getResulSets();
if (resultSets != null) {
while (rsw != null && resultSetCount < resultSets.length) {
ResultMapping parentMapping = nextResultMaps.get(resultSets[resultSetCount]);
if (parentMapping != null) {
String nestedResultMapId = parentMapping.getNestedResultMapId();
ResultMap resultMap = configuration.getResultMap(nestedResultMapId);
handleResultSet(rsw, resultMap, null, parentMapping);
}
rsw = getNextResultSet(stmt);
cleanUpAfterHandlingResultSet();
resultSetCount++;
}
}
List<Object> lists = collapseSingleResultList(multipleResults);
if(mappedStatement.getId().indexOf(BATCHSAVE)>-1){
try {
List<Object> mlist = new ArrayList<Object>();
Object parameterObject = boundSql.getParameterObject();
Map map = (Map) parameterObject;
Object o3 = null;
if(null!=map){
o3=map.get("param3");
}
for (Object object : lists) {
Map<String, Object> m = (Map) object;
Object o = null;
if(null!=o3){
Class fm = (Class) o3;
o= fm.newInstance();
}else{
o = (Object) parameterObject.ge
- 1
- 2
前往页