com.ibatis.sqlmap.engine.mapping.result.AutoResultMap Maven / Gradle / Ivy
/**
* Copyright 2004-2015 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 com.ibatis.sqlmap.engine.mapping.result;
import com.ibatis.common.beans.*;
import com.ibatis.sqlmap.client.SqlMapException;
import com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate;
import com.ibatis.sqlmap.engine.scope.StatementScope;
import com.ibatis.sqlmap.engine.type.DomTypeMarker;
import java.sql.*;
import java.util.*;
/**
* An automatic result map for simple stuff
*/
public class AutoResultMap extends ResultMap {
/**
* Constructor to pass in the SqlMapExecutorDelegate
*
* @param delegate the delegate
* @param delegate delegate
* @param allowRemapping allowRemapping
*/
public AutoResultMap(SqlMapExecutorDelegate delegate, boolean allowRemapping) {
super(delegate);
this.allowRemapping = allowRemapping;
}
@Override
public synchronized Object[] getResults(StatementScope statementScope, ResultSet rs) throws SQLException {
if (allowRemapping || getResultMappings() == null) {
initialize(rs);
}
return super.getResults(statementScope, rs);
}
@Override
public Object setResultObjectValues(StatementScope statementScope, Object resultObject, Object[] values) {
// synchronization is only needed when remapping is enabled
if (allowRemapping) {
synchronized (this) {
return super.setResultObjectValues(statementScope, resultObject, values);
}
}
return super.setResultObjectValues(statementScope, resultObject, values);
}
private void initialize(ResultSet rs) {
if (getResultClass() == null) {
throw new SqlMapException("The automatic ResultMap named " + this.getId()
+ " had a null result class (not allowed).");
} else if (Map.class.isAssignableFrom(getResultClass())) {
initializeMapResults(rs);
} else if (getDelegate().getTypeHandlerFactory().getTypeHandler(getResultClass()) != null) {
initializePrimitiveResults(rs);
} else if (DomTypeMarker.class.isAssignableFrom(getResultClass())) {
initializeXmlResults(rs);
} else {
initializeBeanResults(rs);
}
}
private void initializeBeanResults(ResultSet rs) {
try {
ClassInfo classInfo = ClassInfo.getInstance(getResultClass());
String[] propertyNames = classInfo.getWriteablePropertyNames();
Map propertyMap = new HashMap();
for (int i = 0; i < propertyNames.length; i++) {
propertyMap.put(propertyNames[i].toUpperCase(java.util.Locale.ENGLISH), propertyNames[i]);
}
List resultMappingList = new ArrayList();
ResultSetMetaData rsmd = rs.getMetaData();
for (int i = 0, n = rsmd.getColumnCount(); i < n; i++) {
String columnName = getColumnIdentifier(rsmd, i + 1);
String upperColumnName = columnName.toUpperCase(java.util.Locale.ENGLISH);
String matchedProp = (String) propertyMap.get(upperColumnName);
Class type = null;
if (matchedProp == null) {
Probe p = ProbeFactory.getProbe(this.getResultClass());
try {
type = p.getPropertyTypeForSetter(this.getResultClass(), columnName);
} catch (Exception e) {
// TODO - add logging to this class?
}
} else {
type = classInfo.getSetterType(matchedProp);
}
if (type != null || matchedProp != null) {
ResultMapping resultMapping = new ResultMapping();
resultMapping.setPropertyName((matchedProp != null ? matchedProp : columnName));
resultMapping.setColumnName(columnName);
resultMapping.setColumnIndex(i + 1);
resultMapping.setTypeHandler(getDelegate().getTypeHandlerFactory().getTypeHandler(type)); // map
// SQL
// to
// JDBC
// type
resultMappingList.add(resultMapping);
}
}
setResultMappingList(resultMappingList);
} catch (SQLException e) {
throw new RuntimeException("Error automapping columns. Cause: " + e);
}
}
private void initializeXmlResults(ResultSet rs) {
try {
List resultMappingList = new ArrayList();
ResultSetMetaData rsmd = rs.getMetaData();
for (int i = 0, n = rsmd.getColumnCount(); i < n; i++) {
String columnName = getColumnIdentifier(rsmd, i + 1);
ResultMapping resultMapping = new ResultMapping();
resultMapping.setPropertyName(columnName);
resultMapping.setColumnName(columnName);
resultMapping.setColumnIndex(i + 1);
resultMapping.setTypeHandler(getDelegate().getTypeHandlerFactory().getTypeHandler(String.class));
resultMappingList.add(resultMapping);
}
setResultMappingList(resultMappingList);
} catch (SQLException e) {
throw new RuntimeException("Error automapping columns. Cause: " + e);
}
}
private void initializeMapResults(ResultSet rs) {
try {
List resultMappingList = new ArrayList();
ResultSetMetaData rsmd = rs.getMetaData();
for (int i = 0, n = rsmd.getColumnCount(); i < n; i++) {
String columnName = getColumnIdentifier(rsmd, i + 1);
ResultMapping resultMapping = new ResultMapping();
resultMapping.setPropertyName(columnName);
resultMapping.setColumnName(columnName);
resultMapping.setColumnIndex(i + 1);
resultMapping.setTypeHandler(getDelegate().getTypeHandlerFactory().getTypeHandler(Object.class));
resultMappingList.add(resultMapping);
}
setResultMappingList(resultMappingList);
} catch (SQLException e) {
throw new RuntimeException("Error automapping columns. Cause: " + e);
}
}
private void initializePrimitiveResults(ResultSet rs) {
try {
ResultSetMetaData rsmd = rs.getMetaData();
String columnName = getColumnIdentifier(rsmd, 1);
ResultMapping resultMapping = new ResultMapping();
resultMapping.setPropertyName(columnName);
resultMapping.setColumnName(columnName);
resultMapping.setColumnIndex(1);
resultMapping.setTypeHandler(getDelegate().getTypeHandlerFactory().getTypeHandler(getResultClass()));
List resultMappingList = new ArrayList();
resultMappingList.add(resultMapping);
setResultMappingList(resultMappingList);
} catch (SQLException e) {
throw new RuntimeException("Error automapping columns. Cause: " + e);
}
}
private String getColumnIdentifier(ResultSetMetaData rsmd, int i) throws SQLException {
if (delegate.isUseColumnLabel()) {
return rsmd.getColumnLabel(i);
} else {
return rsmd.getColumnName(i);
}
}
}