MybatisMapperAnnotationBuilder.java 25 KB
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/**
* Copyright 2009-2016 the original author or authors.
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.baomidou.mybatisplus;

import com.baomidou.mybatisplus.entity.GlobalConfiguration;
import com.baomidou.mybatisplus.mapper.BaseMapper;
import org.apache.ibatis.annotations.Arg;
import org.apache.ibatis.annotations.CacheNamespace;
import org.apache.ibatis.annotations.CacheNamespaceRef;
import org.apache.ibatis.annotations.Case;
import org.apache.ibatis.annotations.ConstructorArgs;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.DeleteProvider;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.InsertProvider;
import org.apache.ibatis.annotations.Lang;
import org.apache.ibatis.annotations.MapKey;
import org.apache.ibatis.annotations.Options;
import org.apache.ibatis.annotations.Options.FlushCachePolicy;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.ResultType;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.SelectKey;
import org.apache.ibatis.annotations.SelectProvider;
import org.apache.ibatis.annotations.TypeDiscriminator;
import org.apache.ibatis.annotations.Update;
import org.apache.ibatis.annotations.UpdateProvider;
import org.apache.ibatis.binding.BindingException;
import org.apache.ibatis.binding.MapperMethod.ParamMap;
import org.apache.ibatis.builder.BuilderException;
import org.apache.ibatis.builder.IncompleteElementException;
import org.apache.ibatis.builder.MapperBuilderAssistant;
import org.apache.ibatis.builder.annotation.MapperAnnotationBuilder;
import org.apache.ibatis.builder.annotation.MethodResolver;
import org.apache.ibatis.builder.annotation.ProviderSqlSource;
import org.apache.ibatis.cursor.Cursor;
import org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator;
import org.apache.ibatis.executor.keygen.KeyGenerator;
import org.apache.ibatis.executor.keygen.NoKeyGenerator;
import org.apache.ibatis.executor.keygen.SelectKeyGenerator;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.mapping.Discriminator;
import org.apache.ibatis.mapping.FetchType;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ResultFlag;
import org.apache.ibatis.mapping.ResultMapping;
import org.apache.ibatis.mapping.ResultSetType;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.mapping.SqlSource;
import org.apache.ibatis.mapping.StatementType;
import org.apache.ibatis.reflection.TypeParameterResolver;
import org.apache.ibatis.scripting.LanguageDriver;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.TypeHandler;
import org.apache.ibatis.type.UnknownTypeHandler;

import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

/**
* <p>
* 继承 MapperAnnotationBuilder 没有XML配置文件注入基础CRUD方法
* </p>
*
* @author Caratacus
* @Date 2016-09-26
*/
public class MybatisMapperAnnotationBuilder extends MapperAnnotationBuilder {

private final Set<Class<? extends Annotation>> sqlAnnotationTypes = new HashSet<Class<? extends Annotation>>();
private final Set<Class<? extends Annotation>> sqlProviderAnnotationTypes = new HashSet<Class<? extends Annotation>>();

private Configuration configuration;
private MapperBuilderAssistant assistant;
private Class<?> type;

public MybatisMapperAnnotationBuilder(Configuration configuration, Class<?> type) {
super(configuration, type);
String resource = type.getName().replace('.', '/') + ".java (best guess)";
this.assistant = new MapperBuilderAssistant(configuration, resource);
this.configuration = configuration;
this.type = type;
sqlAnnotationTypes.add(Select.class);
sqlAnnotationTypes.add(Insert.class);
sqlAnnotationTypes.add(Update.class);
sqlAnnotationTypes.add(Delete.class);
sqlProviderAnnotationTypes.add(SelectProvider.class);
sqlProviderAnnotationTypes.add(InsertProvider.class);
sqlProviderAnnotationTypes.add(UpdateProvider.class);
sqlProviderAnnotationTypes.add(DeleteProvider.class);
}

public void parse() {
String resource = type.toString();
if (!configuration.isResourceLoaded(resource)) {
boolean existXml = loadXmlResource();
configuration.addLoadedResource(resource);
assistant.setCurrentNamespace(type.getName());
parseCache();
parseCacheRef();
Method[] methods = type.getMethods();
// TODO 注入存在 xxMapper.xml CURD (应该在注解之前注入)
inspectInject(existXml);
for (Method method : methods) {
try {
// issue #237
if (!method.isBridge()) {
parseStatement(method);
}
} catch (IncompleteElementException e) {
configuration.addIncompleteMethod(new MethodResolver(this, method));
}
}

}
parsePendingMethods();
}

/*
* 注入 CURD 动态 SQL(XML不存在时注入)
*/
private void inspectInject(boolean flag) {
if (!flag && BaseMapper.class.isAssignableFrom(type)) {
GlobalConfiguration.getSqlInjector(configuration).inspectInject(assistant, type);
}
}

private void parsePendingMethods() {
Collection<MethodResolver> incompleteMethods = configuration.getIncompleteMethods();
synchronized (incompleteMethods) {
Iterator<MethodResolver> iter = incompleteMethods.iterator();
while (iter.hasNext()) {
try {
iter.next().resolve();
iter.remove();
} catch (IncompleteElementException e) {
// This method is still missing a resource
}
}
}
}

/**
* 是否存在XML(该方法并不能客观的判断resource的路径,只是Mybatis默认认为的xml路径)
*
* @return boolean ture存在,flase不存在
*/
// TODO 该方法改为返回 boolean 判断是否存在 xxxMapper.xml
private boolean loadXmlResource() {
boolean flag = true;
// Spring may not know the real resource name so we check a flag
// to prevent loading again a resource twice
// this flag is set at MybatisXMLMapperBuilder#bindMapperForNamespace
if (!configuration.isResourceLoaded("namespace:" + type.getName())) {
String xmlResource = type.getName().replace('.', '/') + ".xml";
InputStream inputStream = null;
try {
inputStream = Resources.getResourceAsStream(type.getClassLoader(), xmlResource);
} catch (IOException e) {
// ignore, resource is not required
flag = false;
}
if (inputStream != null) {
MybatisXMLMapperBuilder xmlParser = new MybatisXMLMapperBuilder(inputStream, assistant.getConfiguration(),
xmlResource, configuration.getSqlFragments(), type.getName());
xmlParser.parse();
}
}
return flag;
}

private void parseCache() {
CacheNamespace cacheDomain = type.getAnnotation(CacheNamespace.class);
if (cacheDomain != null) {
Integer size = cacheDomain.size() == 0 ? null : cacheDomain.size();
Long flushInterval = cacheDomain.flushInterval() == 0 ? null : cacheDomain.flushInterval();
assistant.useNewCache(cacheDomain.implementation(), cacheDomain.eviction(), flushInterval, size,
cacheDomain.readWrite(), cacheDomain.blocking(), null);
}
}

private void parseCacheRef() {
CacheNamespaceRef cacheDomainRef = type.getAnnotation(CacheNamespaceRef.class);
if (cacheDomainRef != null) {
assistant.useCacheRef(cacheDomainRef.value().getName());
}
}

private String parseResultMap(Method method) {
Class<?> returnType = getReturnType(method);
ConstructorArgs args = method.getAnnotation(ConstructorArgs.class);
Results results = method.getAnnotation(Results.class);
TypeDiscriminator typeDiscriminator = method.getAnnotation(TypeDiscriminator.class);
String resultMapId = generateResultMapName(method);
applyResultMap(resultMapId, returnType, argsIf(args), resultsIf(results), typeDiscriminator);
return resultMapId;
}

private String generateResultMapName(Method method) {
Results results = method.getAnnotation(Results.class);
if (results != null && !results.id().isEmpty()) {
return type.getName() + "." + results.id();
}
StringBuilder suffix = new StringBuilder();
for (Class<?> c : method.getParameterTypes()) {
suffix.append("-");
suffix.append(c.getSimpleName());
}
if (suffix.length() < 1) {
suffix.append("-void");
}
return type.getName() + "." + method.getName() + suffix;
}

private void applyResultMap(String resultMapId, Class<?> returnType, Arg[] args, Result[] results,
TypeDiscriminator discriminator) {
List<ResultMapping> resultMappings = new ArrayList<ResultMapping>();
applyConstructorArgs(args, returnType, resultMappings);
applyResults(results, returnType, resultMappings);
Discriminator disc = applyDiscriminator(resultMapId, returnType, discriminator);
// TODO add AutoMappingBehaviour
assistant.addResultMap(resultMapId, returnType, null, disc, resultMappings, null);
createDiscriminatorResultMaps(resultMapId, returnType, discriminator);
}

private void createDiscriminatorResultMaps(String resultMapId, Class<?> resultType, TypeDiscriminator discriminator) {
if (discriminator != null) {
for (Case c : discriminator.cases()) {
String caseResultMapId = resultMapId + "-" + c.value();
List<ResultMapping> resultMappings = new ArrayList<ResultMapping>();
// issue #136
applyConstructorArgs(c.constructArgs(), resultType, resultMappings);
applyResults(c.results(), resultType, resultMappings);
// TODO add AutoMappingBehaviour
assistant.addResultMap(caseResultMapId, c.type(), resultMapId, null, resultMappings, null);
}
}
}

private Discriminator applyDiscriminator(String resultMapId, Class<?> resultType, TypeDiscriminator discriminator) {
if (discriminator != null) {
String column = discriminator.column();
Class<?> javaType = discriminator.javaType() == void.class ? String.class : discriminator.javaType();
JdbcType jdbcType = discriminator.jdbcType() == JdbcType.UNDEFINED ? null : discriminator.jdbcType();
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>) (discriminator.typeHandler() == UnknownTypeHandler.class ? null
: discriminator.typeHandler());
Case[] cases = discriminator.cases();
Map<String, String> discriminatorMap = new HashMap<String, String>();
for (Case c : cases) {
String value = c.value();
String caseResultMapId = resultMapId + "-" + value;
discriminatorMap.put(value, caseResultMapId);
}
return assistant.buildDiscriminator(resultType, column, javaType, jdbcType, typeHandler, discriminatorMap);
}
return null;
}

void parseStatement(Method method) {
Class<?> parameterTypeClass = getParameterType(method);
LanguageDriver languageDriver = getLanguageDriver(method);
SqlSource sqlSource = getSqlSourceFromAnnotations(method, parameterTypeClass, languageDriver);
if (sqlSource != null) {
Options options = method.getAnnotation(Options.class);
final String mappedStatementId = type.getName() + "." + method.getName();
Integer fetchSize = null;
Integer timeout = null;
StatementType statementType = StatementType.PREPARED;
ResultSetType resultSetType = ResultSetType.FORWARD_ONLY;
SqlCommandType sqlCommandType = getSqlCommandType(method);
boolean isSelect = sqlCommandType == SqlCommandType.SELECT;
boolean flushCache = !isSelect;
boolean useCache = isSelect;
KeyGenerator keyGenerator;
String keyProperty = "id";
String keyColumn = null;
if (SqlCommandType.INSERT.equals(sqlCommandType) || SqlCommandType.UPDATE.equals(sqlCommandType)) {
// first check for SelectKey annotation - that overrides
// everything else
SelectKey selectKey = method.getAnnotation(SelectKey.class);
if (selectKey != null) {
keyGenerator = handleSelectKeyAnnotation(selectKey, mappedStatementId, getParameterType(method),
languageDriver);
keyProperty = selectKey.keyProperty();
} else if (options == null) {
keyGenerator = configuration.isUseGeneratedKeys() ? new Jdbc3KeyGenerator() : new NoKeyGenerator();
} else {
keyGenerator = options.useGeneratedKeys() ? new Jdbc3KeyGenerator() : new NoKeyGenerator();
keyProperty = options.keyProperty();
keyColumn = options.keyColumn();
}
} else {
keyGenerator = new NoKeyGenerator();
}
if (options != null) {
if (FlushCachePolicy.TRUE.equals(options.flushCache())) {
flushCache = true;
} else if (FlushCachePolicy.FALSE.equals(options.flushCache())) {
flushCache = false;
}
useCache = options.useCache();
fetchSize = options.fetchSize() > -1 || options.fetchSize() == Integer.MIN_VALUE ? options.fetchSize() : null; // issue
// #348
timeout = options.timeout() > -1 ? options.timeout() : null;
statementType = options.statementType();
resultSetType = options.resultSetType();
}
String resultMapId = null;
ResultMap resultMapAnnotation = method.getAnnotation(ResultMap.class);
if (resultMapAnnotation != null) {
String[] resultMaps = resultMapAnnotation.value();
StringBuilder sb = new StringBuilder();
for (String resultMap : resultMaps) {
if (sb.length() > 0) {
sb.append(",");
}
sb.append(resultMap);
}
resultMapId = sb.toString();
} else if (isSelect) {
resultMapId = parseResultMap(method);
}
assistant.addMappedStatement(mappedStatementId, sqlSource, statementType, sqlCommandType, fetchSize, timeout,
// ParameterMapID
null, parameterTypeClass, resultMapId, getReturnType(method), resultSetType, flushCache, useCache,
// TODO gcode issue #577
false, keyGenerator, keyProperty, keyColumn,
// DatabaseID
null, languageDriver,
// ResultSets
options != null ? nullOrEmpty(options.resultSets()) : null);
}
}

private LanguageDriver getLanguageDriver(Method method) {
Lang lang = method.getAnnotation(Lang.class);
Class<?> langClass = null;
if (lang != null) {
langClass = lang.value();
}
return assistant.getLanguageDriver(langClass);
}

private Class<?> getParameterType(Method method) {
Class<?> parameterType = null;
Class<?>[] parameterTypes = method.getParameterTypes();
for (Class<?> currentParameterType : parameterTypes) {
if (!RowBounds.class.isAssignableFrom(currentParameterType)
&& !ResultHandler.class.isAssignableFrom(currentParameterType)) {
if (parameterType == null) {
parameterType = currentParameterType;
} else {
// issue #135
parameterType = ParamMap.class;
}
}
}
return parameterType;
}

private Class<?> getReturnType(Method method) {
Class<?> returnType = method.getReturnType();
Type resolvedReturnType = TypeParameterResolver.resolveReturnType(method, type);
if (resolvedReturnType instanceof Class) {
returnType = (Class<?>) resolvedReturnType;
if (returnType.isArray()) {
returnType = returnType.getComponentType();
}
// gcode issue #508
if (void.class.equals(returnType)) {
ResultType rt = method.getAnnotation(ResultType.class);
if (rt != null) {
returnType = rt.value();
}
}
} else if (resolvedReturnType instanceof ParameterizedType) {
ParameterizedType parameterizedType = (ParameterizedType) resolvedReturnType;
Class<?> rawType = (Class<?>) parameterizedType.getRawType();
if (Collection.class.isAssignableFrom(rawType) || Cursor.class.isAssignableFrom(rawType)) {
Type[] actualTypeArguments = parameterizedType.getActualTypeArguments();
if (actualTypeArguments != null && actualTypeArguments.length == 1) {
Type returnTypeParameter = actualTypeArguments[0];
if (returnTypeParameter instanceof Class<?>) {
returnType = (Class<?>) returnTypeParameter;
} else if (returnTypeParameter instanceof ParameterizedType) {
// (gcode issue #443) actual type can be a also a
// parameterized type
returnType = (Class<?>) ((ParameterizedType) returnTypeParameter).getRawType();
} else if (returnTypeParameter instanceof GenericArrayType) {
Class<?> componentType = (Class<?>) ((GenericArrayType) returnTypeParameter).getGenericComponentType();
// (gcode issue #525) support List<byte[]>
returnType = Array.newInstance(componentType, 0).getClass();
}
}
} else if (method.isAnnotationPresent(MapKey.class) && Map.class.isAssignableFrom(rawType)) {
// (gcode issue 504) Do not look into Maps if there is not
// MapKey annotation
Type[] actualTypeArguments = parameterizedType.getActualTypeArguments();
if (actualTypeArguments != null && actualTypeArguments.length == 2) {
Type returnTypeParameter = actualTypeArguments[1];
if (returnTypeParameter instanceof Class<?>) {
returnType = (Class<?>) returnTypeParameter;
} else if (returnTypeParameter instanceof ParameterizedType) {
// (gcode issue 443) actual type can be a also a
// parameterized type
returnType = (Class<?>) ((ParameterizedType) returnTypeParameter).getRawType();
}
}
}
}
return returnType;
}

private SqlSource getSqlSourceFromAnnotations(Method method, Class<?> parameterType, LanguageDriver languageDriver) {
try {
Class<? extends Annotation> sqlAnnotationType = getSqlAnnotationType(method);
Class<? extends Annotation> sqlProviderAnnotationType = getSqlProviderAnnotationType(method);
if (sqlAnnotationType != null) {
if (sqlProviderAnnotationType != null) {
throw new BindingException("You cannot supply both a static SQL and SqlProvider to method named "
+ method.getName());
}
Annotation sqlAnnotation = method.getAnnotation(sqlAnnotationType);
final String[] strings = (String[]) sqlAnnotation.getClass().getMethod("value").invoke(sqlAnnotation);
return buildSqlSourceFromStrings(strings, parameterType, languageDriver);
} else if (sqlProviderAnnotationType != null) {
Annotation sqlProviderAnnotation = method.getAnnotation(sqlProviderAnnotationType);
return new ProviderSqlSource(assistant.getConfiguration(), sqlProviderAnnotation);
}
return null;
} catch (Exception e) {
throw new BuilderException("Could not find value method on SQL annotation. Cause: " + e, e);
}
}

private SqlSource buildSqlSourceFromStrings(String[] strings, Class<?> parameterTypeClass, LanguageDriver languageDriver) {
final StringBuilder sql = new StringBuilder();
for (String fragment : strings) {
sql.append(fragment);
sql.append(" ");
}
return languageDriver.createSqlSource(configuration, sql.toString().trim(), parameterTypeClass);
}

private SqlCommandType getSqlCommandType(Method method) {
Class<? extends Annotation> type = getSqlAnnotationType(method);
if (type == null) {
type = getSqlProviderAnnotationType(method);
if (type == null) {
return SqlCommandType.UNKNOWN;
}
if (type == SelectProvider.class) {
type = Select.class;
} else if (type == InsertProvider.class) {
type = Insert.class;
} else if (type == UpdateProvider.class) {
type = Update.class;
} else if (type == DeleteProvider.class) {
type = Delete.class;
}
}
return SqlCommandType.valueOf(type.getSimpleName().toUpperCase(Locale.ENGLISH));
}

private Class<? extends Annotation> getSqlAnnotationType(Method method) {
return chooseAnnotationType(method, sqlAnnotationTypes);
}

private Class<? extends Annotation> getSqlProviderAnnotationType(Method method) {
return chooseAnnotationType(method, sqlProviderAnnotationTypes);
}

private Class<? extends Annotation> chooseAnnotationType(Method method, Set<Class<? extends Annotation>> types) {
for (Class<? extends Annotation> type : types) {
Annotation annotation = method.getAnnotation(type);
if (annotation != null) {
return type;
}
}
return null;
}

private void applyResults(Result[] results, Class<?> resultType, List<ResultMapping> resultMappings) {
for (Result result : results) {
List<ResultFlag> flags = new ArrayList<ResultFlag>();
if (result.id()) {
flags.add(ResultFlag.ID);
}
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>) ((result.typeHandler() == UnknownTypeHandler.class) ? null
: result.typeHandler());
ResultMapping resultMapping = assistant.buildResultMapping(resultType, nullOrEmpty(result.property()),
nullOrEmpty(result.column()), result.javaType() == void.class ? null : result.javaType(),
result.jdbcType() == JdbcType.UNDEFINED ? null : result.jdbcType(),
hasNestedSelect(result) ? nestedSelectId(result) : null, null, null, null, typeHandler, flags, null, null,
isLazy(result));
resultMappings.add(resultMapping);
}
}

private String nestedSelectId(Result result) {
String nestedSelect = result.one().select();
if (nestedSelect.length() < 1) {
nestedSelect = result.many().select();
}
if (!nestedSelect.contains(".")) {
nestedSelect = type.getName() + "." + nestedSelect;
}
return nestedSelect;
}

private boolean isLazy(Result result) {
boolean isLazy = configuration.isLazyLoadingEnabled();
if (result.one().select().length() > 0 && FetchType.DEFAULT != result.one().fetchType()) {
isLazy = (result.one().fetchType() == FetchType.LAZY);
} else if (result.many().select().length() > 0 && FetchType.DEFAULT != result.many().fetchType()) {
isLazy = (result.many().fetchType() == FetchType.LAZY);
}
return isLazy;
}

private boolean hasNestedSelect(Result result) {
if (result.one().select().length() > 0 && result.many().select().length() > 0) {
throw new BuilderException("Cannot use both @One and @Many annotations in the same @Result");
}
return result.one().select().length() > 0 || result.many().select().length() > 0;
}

private void applyConstructorArgs(Arg[] args, Class<?> resultType, List<ResultMapping> resultMappings) {
for (Arg arg : args) {
List<ResultFlag> flags = new ArrayList<ResultFlag>();
flags.add(ResultFlag.CONSTRUCTOR);
if (arg.id()) {
flags.add(ResultFlag.ID);
}
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>) (arg.typeHandler() == UnknownTypeHandler.class ? null
: arg.typeHandler());
ResultMapping resultMapping = assistant.buildResultMapping(resultType, null, nullOrEmpty(arg.column()),
arg.javaType() == void.class ? null : arg.javaType(),
arg.jdbcType() == JdbcType.UNDEFINED ? null : arg.jdbcType(), nullOrEmpty(arg.select()),
nullOrEmpty(arg.resultMap()), null, null, typeHandler, flags, null, null, false);
resultMappings.add(resultMapping);
}
}

private String nullOrEmpty(String value) {
return value == null || value.trim().length() == 0 ? null : value;
}

private Result[] resultsIf(Results results) {
return results == null ? new Result[0] : results.value();
}

private Arg[] argsIf(ConstructorArgs args) {
return args == null ? new Arg[0] : args.value();
}

private KeyGenerator handleSelectKeyAnnotation(SelectKey selectKeyAnnotation, String baseStatementId,
Class<?> parameterTypeClass, LanguageDriver languageDriver) {
String id = baseStatementId + SelectKeyGenerator.SELECT_KEY_SUFFIX;
Class<?> resultTypeClass = selectKeyAnnotation.resultType();
StatementType statementType = selectKeyAnnotation.statementType();
String keyProperty = selectKeyAnnotation.keyProperty();
String keyColumn = selectKeyAnnotation.keyColumn();
boolean executeBefore = selectKeyAnnotation.before();
// defaults
boolean useCache = false;
KeyGenerator keyGenerator = new NoKeyGenerator();
Integer fetchSize = null;
Integer timeout = null;
boolean flushCache = false;
String parameterMap = null;
String resultMap = null;
ResultSetType resultSetTypeEnum = null;
SqlSource sqlSource = buildSqlSourceFromStrings(selectKeyAnnotation.statement(), parameterTypeClass, languageDriver);
SqlCommandType sqlCommandType = SqlCommandType.SELECT;
assistant.addMappedStatement(id, sqlSource, statementType, sqlCommandType, fetchSize, timeout, parameterMap,
parameterTypeClass, resultMap, resultTypeClass, resultSetTypeEnum, flushCache, useCache, false, keyGenerator,
keyProperty, keyColumn, null, languageDriver, null);
id = assistant.applyCurrentNamespace(id, false);
MappedStatement keyStatement = configuration.getMappedStatement(id, false);
SelectKeyGenerator answer = new SelectKeyGenerator(keyStatement, executeBefore);
configuration.addKeyGenerator(id, answer);
return answer;
}

}