Java Code Examples for org.apache.ibatis.reflection.MetaClass

The following examples show how to use org.apache.ibatis.reflection.MetaClass. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: mybatis-test   Source File: MetaClassTest.java    License: Apache License 2.0 6 votes vote down vote up
@Test
public void testHasSetter() {
    MetaClass authorMeta = MetaClass.forClass(Author.class, new DefaultReflectorFactory());

    System.out.println("\n------------☆ Author ☆------------");
    System.out.println("id -> " + authorMeta.hasSetter("id"));
    System.out.println("name -> " + authorMeta.hasSetter("name"));
    System.out.println("age -> " + authorMeta.hasSetter("age"));
    System.out.println("articles -> " + authorMeta.hasSetter("articles"));
    System.out.println("articles[] -> " + authorMeta.hasSetter("articles[]"));
    System.out.println("title -> " + authorMeta.hasSetter("title"));

    MetaClass articleMeta = MetaClass.forClass(Article.class, new DefaultReflectorFactory());
    System.out.println("\n------------☆ Article ☆------------");
    System.out.println("id -> " + articleMeta.hasSetter("id"));
    System.out.println("title -> " + articleMeta.hasSetter("title"));
    System.out.println("content -> " + articleMeta.hasSetter("content"));
    System.out.println("author.id -> " + articleMeta.hasSetter("author.id"));
    System.out.println("author.name -> " + articleMeta.hasSetter("author.name"));
    System.out.println();
}
 
Example 2
Source Project: mybaties   Source File: MapperBuilderAssistant.java    License: Apache License 2.0 6 votes vote down vote up
private Class<?> resolveParameterJavaType(Class<?> resultType, String property, Class<?> javaType, JdbcType jdbcType) {
  if (javaType == null) {
    if (JdbcType.CURSOR.equals(jdbcType)) {
      javaType = java.sql.ResultSet.class;
    } else if (Map.class.isAssignableFrom(resultType)) {
      javaType = Object.class;
    } else {
      MetaClass metaResultType = MetaClass.forClass(resultType);
      javaType = metaResultType.getGetterType(property);
    }
  }
  if (javaType == null) {
    javaType = Object.class;
  }
  return javaType;
}
 
Example 3
Source Project: mybaties   Source File: DefaultResultSetHandler.java    License: Apache License 2.0 6 votes vote down vote up
private Object createResultObject(ResultSetWrapper rsw, ResultMap resultMap, List<Class<?>> constructorArgTypes, List<Object> constructorArgs, String columnPrefix)
     throws SQLException {
//得到result type
   final Class<?> resultType = resultMap.getType();
   final MetaClass metaType = MetaClass.forClass(resultType);
   final List<ResultMapping> constructorMappings = resultMap.getConstructorResultMappings();
   if (typeHandlerRegistry.hasTypeHandler(resultType)) {
     //基本型
     return createPrimitiveResultObject(rsw, resultMap, columnPrefix);
   } else if (!constructorMappings.isEmpty()) {
     //有参数的构造函数
     return createParameterizedResultObject(rsw, resultType, constructorMappings, constructorArgTypes, constructorArgs, columnPrefix);
   } else if (resultType.isInterface() || metaType.hasDefaultConstructor()) {
     //普通bean类型
     return objectFactory.create(resultType);
   } else if (shouldApplyAutomaticMappings(resultMap, false)) {
     //自动映射
     return createByConstructorSignature(rsw, resultType, constructorArgTypes, constructorArgs, columnPrefix);
   }
   throw new ExecutorException("Do not know how to create an instance of " + resultType);
 }
 
Example 4
Source Project: mybaties   Source File: DefaultResultSetHandler.java    License: Apache License 2.0 6 votes vote down vote up
private void createRowKeyForUnmappedProperties(ResultMap resultMap, ResultSetWrapper rsw, CacheKey cacheKey, String columnPrefix) throws SQLException {
  final MetaClass metaType = MetaClass.forClass(resultMap.getType());
  List<String> unmappedColumnNames = rsw.getUnmappedColumnNames(resultMap, columnPrefix);
  for (String column : unmappedColumnNames) {
    String property = column;
    if (columnPrefix != null && !columnPrefix.isEmpty()) {
      // When columnPrefix is specified, ignore columns without the prefix.
      if (column.toUpperCase(Locale.ENGLISH).startsWith(columnPrefix)) {
        property = column.substring(columnPrefix.length());
      } else {
        continue;
      }
    }
    if (metaType.findProperty(property, configuration.isMapUnderscoreToCamelCase()) != null) {
      String value = rsw.getResultSet().getString(column);
      if (value != null) {
        cacheKey.update(column);
        cacheKey.update(value);
      }
    }
  }
}
 
Example 5
Source Project: mybatis   Source File: MapperBuilderAssistant.java    License: Apache License 2.0 6 votes vote down vote up
private Class<?> resolveParameterJavaType(Class<?> resultType, String property, Class<?> javaType, JdbcType jdbcType) {
  if (javaType == null) {
    if (JdbcType.CURSOR.equals(jdbcType)) {
      javaType = java.sql.ResultSet.class;
    } else if (Map.class.isAssignableFrom(resultType)) {
      javaType = Object.class;
    } else {
      MetaClass metaResultType = MetaClass.forClass(resultType);
      javaType = metaResultType.getGetterType(property);
    }
  }
  if (javaType == null) {
    javaType = Object.class;
  }
  return javaType;
}
 
Example 6
Source Project: mybatis   Source File: DefaultResultSetHandler.java    License: Apache License 2.0 6 votes vote down vote up
private Object createResultObject(ResultSetWrapper rsw, ResultMap resultMap, List<Class<?>> constructorArgTypes, List<Object> constructorArgs, String columnPrefix)
     throws SQLException {
//得到result type
   final Class<?> resultType = resultMap.getType();
   final MetaClass metaType = MetaClass.forClass(resultType);
   final List<ResultMapping> constructorMappings = resultMap.getConstructorResultMappings();
   if (typeHandlerRegistry.hasTypeHandler(resultType)) {
     //基本型
     return createPrimitiveResultObject(rsw, resultMap, columnPrefix);
   } else if (!constructorMappings.isEmpty()) {
     //有参数的构造函数
     return createParameterizedResultObject(rsw, resultType, constructorMappings, constructorArgTypes, constructorArgs, columnPrefix);
   } else if (resultType.isInterface() || metaType.hasDefaultConstructor()) {
     //普通bean类型
     return objectFactory.create(resultType);
   } else if (shouldApplyAutomaticMappings(resultMap, false)) {
     //自动映射
     return createByConstructorSignature(rsw, resultType, constructorArgTypes, constructorArgs, columnPrefix);
   }
   throw new ExecutorException("Do not know how to create an instance of " + resultType);
 }
 
Example 7
Source Project: mybatis   Source File: DefaultResultSetHandler.java    License: Apache License 2.0 6 votes vote down vote up
private void createRowKeyForUnmappedProperties(ResultMap resultMap, ResultSetWrapper rsw, CacheKey cacheKey, String columnPrefix) throws SQLException {
  final MetaClass metaType = MetaClass.forClass(resultMap.getType());
  List<String> unmappedColumnNames = rsw.getUnmappedColumnNames(resultMap, columnPrefix);
  for (String column : unmappedColumnNames) {
    String property = column;
    if (columnPrefix != null && !columnPrefix.isEmpty()) {
      // When columnPrefix is specified, ignore columns without the prefix.
      if (column.toUpperCase(Locale.ENGLISH).startsWith(columnPrefix)) {
        property = column.substring(columnPrefix.length());
      } else {
        continue;
      }
    }
    if (metaType.findProperty(property, configuration.isMapUnderscoreToCamelCase()) != null) {
      String value = rsw.getResultSet().getString(column);
      if (value != null) {
        cacheKey.update(column);
        cacheKey.update(value);
      }
    }
  }
}
 
Example 8
private void settingsElement(XNode context) throws Exception {
    if (context != null) {
        Properties props = context.getChildrenAsProperties();
        // Check that all settings are known to the configuration class
        MetaClass metaConfig = MetaClass.forClass(Configuration.class, localReflectorFactory);
        for (Object key : props.keySet()) {
            if (!metaConfig.hasSetter(String.valueOf(key))) {
                throw new BuilderException("The setting " + key + " is not known.  Make sure you spelled it correctly (case sensitive).");
            }
        }
        configuration.setAutoMappingBehavior(AutoMappingBehavior.valueOf(props.getProperty("autoMappingBehavior", "PARTIAL")));
        configuration.setCacheEnabled(booleanValueOf(props.getProperty("cacheEnabled"), true));
        configuration.setProxyFactory((ProxyFactory) createInstance(props.getProperty("proxyFactory")));
        configuration.setLazyLoadingEnabled(booleanValueOf(props.getProperty("lazyLoadingEnabled"), false));
        configuration.setAggressiveLazyLoading(booleanValueOf(props.getProperty("aggressiveLazyLoading"), true));
        configuration.setMultipleResultSetsEnabled(booleanValueOf(props.getProperty("multipleResultSetsEnabled"), true));
        configuration.setUseColumnLabel(booleanValueOf(props.getProperty("useColumnLabel"), true));
        configuration.setUseGeneratedKeys(booleanValueOf(props.getProperty("useGeneratedKeys"), false));
        configuration.setDefaultExecutorType(ExecutorType.valueOf(props.getProperty("defaultExecutorType", "SIMPLE")));
        configuration.setDefaultStatementTimeout(integerValueOf(props.getProperty("defaultStatementTimeout"), null));
        configuration.setDefaultFetchSize(integerValueOf(props.getProperty("defaultFetchSize"), null));
        configuration.setMapUnderscoreToCamelCase(booleanValueOf(props.getProperty("mapUnderscoreToCamelCase"), false));
        configuration.setSafeRowBoundsEnabled(booleanValueOf(props.getProperty("safeRowBoundsEnabled"), false));
        configuration.setLocalCacheScope(LocalCacheScope.valueOf(props.getProperty("localCacheScope", "SESSION")));
        configuration.setJdbcTypeForNull(JdbcType.valueOf(props.getProperty("jdbcTypeForNull", "OTHER")));
        configuration.setLazyLoadTriggerMethods(stringSetValueOf(props.getProperty("lazyLoadTriggerMethods"), "equals,clone,hashCode,toString"));
        configuration.setSafeResultHandlerEnabled(booleanValueOf(props.getProperty("safeResultHandlerEnabled"), true));
        configuration.setDefaultScriptingLanguage(resolveClass(props.getProperty("defaultScriptingLanguage")));
        configuration.setCallSettersOnNulls(booleanValueOf(props.getProperty("callSettersOnNulls"), false));
        configuration.setLogPrefix(props.getProperty("logPrefix"));
        configuration.setLogImpl(resolveClass(props.getProperty("logImpl")));
    }
}
 
Example 9
Source Project: genericdao   Source File: JpaBeanWrapper.java    License: Artistic License 2.0 5 votes vote down vote up
public JpaBeanWrapper(MetaObject metaObject, Object object) {
    super(metaObject, object) ;
    this.object = object;
    this.metaClass = MetaClass.forClass(object.getClass(), metaObject.getReflectorFactory());

    if(!entityFieldsMap.containsKey(object.getClass().getName())){
        entityFieldsMap.put(object.getClass().getName() ,
                FieldHelper.getAllEntityFieldColumnMap(object.getClass()) ) ;
    }

    entityFieldColumnMap = entityFieldsMap.get( object.getClass().getName() );
}
 
Example 10
Source Project: mybaties   Source File: MapperBuilderAssistant.java    License: Apache License 2.0 5 votes vote down vote up
private Class<?> resolveResultJavaType(Class<?> resultType, String property, Class<?> javaType) {
  if (javaType == null && property != null) {
    try {
      MetaClass metaResultType = MetaClass.forClass(resultType);
      javaType = metaResultType.getSetterType(property);
    } catch (Exception e) {
      //ignore, following null check statement will deal with the situation
    }
  }
  if (javaType == null) {
    javaType = Object.class;
  }
  return javaType;
}
 
Example 11
Source Project: mybatis   Source File: MapperBuilderAssistant.java    License: Apache License 2.0 5 votes vote down vote up
private Class<?> resolveResultJavaType(Class<?> resultType, String property, Class<?> javaType) {
  if (javaType == null && property != null) {
    try {
      MetaClass metaResultType = MetaClass.forClass(resultType);
      javaType = metaResultType.getSetterType(property);
    } catch (Exception e) {
      //ignore, following null check statement will deal with the situation
    }
  }
  if (javaType == null) {
    javaType = Object.class;
  }
  return javaType;
}
 
Example 12
Source Project: QuickProject   Source File: XMLConfigBuilder.java    License: Apache License 2.0 5 votes vote down vote up
private void settingsElement(XNode context) throws Exception {
  if (context != null) {
    Properties props = context.getChildrenAsProperties();
    // Check that all settings are known to the configuration class
    MetaClass metaConfig = MetaClass.forClass(Configuration.class);
    for (Object key : props.keySet()) {
      if (!metaConfig.hasSetter(String.valueOf(key))) {
        throw new BuilderException("The setting " + key + " is not known.  Make sure you spelled it correctly (case sensitive).");
      }
    }
    configuration.setAutoMappingBehavior(AutoMappingBehavior.valueOf(props.getProperty("autoMappingBehavior", "PARTIAL")));
    configuration.setCacheEnabled(booleanValueOf(props.getProperty("cacheEnabled"), true));
    configuration.setProxyFactory((ProxyFactory) createInstance(props.getProperty("proxyFactory")));
    configuration.setLazyLoadingEnabled(booleanValueOf(props.getProperty("lazyLoadingEnabled"), false));
    configuration.setAggressiveLazyLoading(booleanValueOf(props.getProperty("aggressiveLazyLoading"), true));
    configuration.setMultipleResultSetsEnabled(booleanValueOf(props.getProperty("multipleResultSetsEnabled"), true));
    configuration.setUseColumnLabel(booleanValueOf(props.getProperty("useColumnLabel"), true));
    configuration.setUseGeneratedKeys(booleanValueOf(props.getProperty("useGeneratedKeys"), false));
    configuration.setDefaultExecutorType(ExecutorType.valueOf(props.getProperty("defaultExecutorType", "SIMPLE")));
    configuration.setDefaultStatementTimeout(integerValueOf(props.getProperty("defaultStatementTimeout"), null));
    configuration.setMapUnderscoreToCamelCase(booleanValueOf(props.getProperty("mapUnderscoreToCamelCase"), false));
    configuration.setSafeRowBoundsEnabled(booleanValueOf(props.getProperty("safeRowBoundsEnabled"), false));
    configuration.setLocalCacheScope(LocalCacheScope.valueOf(props.getProperty("localCacheScope", "SESSION")));
    configuration.setJdbcTypeForNull(JdbcType.valueOf(props.getProperty("jdbcTypeForNull", "OTHER")));
    configuration.setLazyLoadTriggerMethods(stringSetValueOf(props.getProperty("lazyLoadTriggerMethods"), "equals,clone,hashCode,toString"));
    configuration.setSafeResultHandlerEnabled(booleanValueOf(props.getProperty("safeResultHandlerEnabled"), true));
    configuration.setDefaultScriptingLanguage(resolveClass(props.getProperty("defaultScriptingLanguage")));
    configuration.setCallSettersOnNulls(booleanValueOf(props.getProperty("callSettersOnNulls"), false));
    configuration.setLogPrefix(props.getProperty("logPrefix"));
    configuration.setLogImpl(resolveClass(props.getProperty("logImpl")));
    configuration.setConfigurationFactory(resolveClass(props.getProperty("configurationFactory")));
  }
}
 
Example 13
Source Project: mybaties   Source File: BeanWrapper.java    License: Apache License 2.0 4 votes vote down vote up
public BeanWrapper(MetaObject metaObject, Object object) {
  super(metaObject);
  this.object = object;
  this.metaClass = MetaClass.forClass(object.getClass());
}
 
Example 14
Source Project: mybaties   Source File: XMLConfigBuilder.java    License: Apache License 2.0 4 votes vote down vote up
private void settingsElement(XNode context) throws Exception {
  if (context != null) {
    Properties props = context.getChildrenAsProperties();
    // Check that all settings are known to the configuration class
    //检查下是否在Configuration类里都有相应的setter方法(没有拼写错误)
    MetaClass metaConfig = MetaClass.forClass(Configuration.class);
    for (Object key : props.keySet()) {
      if (!metaConfig.hasSetter(String.valueOf(key))) {
        throw new BuilderException("The setting " + key + " is not known.  Make sure you spelled it correctly (case sensitive).");
      }
    }
    
    //下面非常简单,一个个设置属性
    //如何自动映射列到字段/ 属性
    configuration.setAutoMappingBehavior(AutoMappingBehavior.valueOf(props.getProperty("autoMappingBehavior", "PARTIAL")));
    //缓存
    configuration.setCacheEnabled(booleanValueOf(props.getProperty("cacheEnabled"), true));
    //proxyFactory (CGLIB | JAVASSIST)
    //延迟加载的核心技术就是用代理模式,CGLIB/JAVASSIST两者选一
    configuration.setProxyFactory((ProxyFactory) createInstance(props.getProperty("proxyFactory")));
    //延迟加载
    configuration.setLazyLoadingEnabled(booleanValueOf(props.getProperty("lazyLoadingEnabled"), false));
    //延迟加载时,每种属性是否还要按需加载
    configuration.setAggressiveLazyLoading(booleanValueOf(props.getProperty("aggressiveLazyLoading"), true));
    //允不允许多种结果集从一个单独 的语句中返回
    configuration.setMultipleResultSetsEnabled(booleanValueOf(props.getProperty("multipleResultSetsEnabled"), true));
    //使用列标签代替列名
    configuration.setUseColumnLabel(booleanValueOf(props.getProperty("useColumnLabel"), true));
    //允许 JDBC 支持生成的键
    configuration.setUseGeneratedKeys(booleanValueOf(props.getProperty("useGeneratedKeys"), false));
    //配置默认的执行器
    configuration.setDefaultExecutorType(ExecutorType.valueOf(props.getProperty("defaultExecutorType", "SIMPLE")));
    //超时时间
    configuration.setDefaultStatementTimeout(integerValueOf(props.getProperty("defaultStatementTimeout"), null));
    //是否将DB字段自动映射到驼峰式Java属性(A_COLUMN-->aColumn)
    configuration.setMapUnderscoreToCamelCase(booleanValueOf(props.getProperty("mapUnderscoreToCamelCase"), false));
    //嵌套语句上使用RowBounds
    configuration.setSafeRowBoundsEnabled(booleanValueOf(props.getProperty("safeRowBoundsEnabled"), false));
    //默认用session级别的缓存
    configuration.setLocalCacheScope(LocalCacheScope.valueOf(props.getProperty("localCacheScope", "SESSION")));
    //为null值设置jdbctype
    configuration.setJdbcTypeForNull(JdbcType.valueOf(props.getProperty("jdbcTypeForNull", "OTHER")));
    //Object的哪些方法将触发延迟加载
    configuration.setLazyLoadTriggerMethods(stringSetValueOf(props.getProperty("lazyLoadTriggerMethods"), "equals,clone,hashCode,toString"));
    //使用安全的ResultHandler
    configuration.setSafeResultHandlerEnabled(booleanValueOf(props.getProperty("safeResultHandlerEnabled"), true));
    //动态SQL生成语言所使用的脚本语言
    configuration.setDefaultScriptingLanguage(resolveClass(props.getProperty("defaultScriptingLanguage")));
    //当结果集中含有Null值时是否执行映射对象的setter或者Map对象的put方法。此设置对于原始类型如int,boolean等无效。 
    configuration.setCallSettersOnNulls(booleanValueOf(props.getProperty("callSettersOnNulls"), false));
    //logger名字的前缀
    configuration.setLogPrefix(props.getProperty("logPrefix"));
    //显式定义用什么log框架,不定义则用默认的自动发现jar包机制
    configuration.setLogImpl(resolveClass(props.getProperty("logImpl")));
    //配置工厂
    configuration.setConfigurationFactory(resolveClass(props.getProperty("configurationFactory")));
  }
}
 
Example 15
Source Project: mybatis   Source File: BeanWrapper.java    License: Apache License 2.0 4 votes vote down vote up
public BeanWrapper(MetaObject metaObject, Object object) {
  super(metaObject);
  this.object = object;
  this.metaClass = MetaClass.forClass(object.getClass());
}
 
Example 16
Source Project: mybatis   Source File: XMLConfigBuilder.java    License: Apache License 2.0 4 votes vote down vote up
private void settingsElement(XNode context) throws Exception {
  if (context != null) {
    Properties props = context.getChildrenAsProperties();
    // Check that all settings are known to the configuration class
    //检查下是否在Configuration类里都有相应的setter方法(没有拼写错误)
    MetaClass metaConfig = MetaClass.forClass(Configuration.class);
    for (Object key : props.keySet()) {
      if (!metaConfig.hasSetter(String.valueOf(key))) {
        throw new BuilderException("The setting " + key + " is not known.  Make sure you spelled it correctly (case sensitive).");
      }
    }
    
    //下面非常简单,一个个设置属性
    //如何自动映射列到字段/ 属性
    configuration.setAutoMappingBehavior(AutoMappingBehavior.valueOf(props.getProperty("autoMappingBehavior", "PARTIAL")));
    //缓存
    configuration.setCacheEnabled(booleanValueOf(props.getProperty("cacheEnabled"), true));
    //proxyFactory (CGLIB | JAVASSIST)
    //延迟加载的核心技术就是用代理模式,CGLIB/JAVASSIST两者选一
    configuration.setProxyFactory((ProxyFactory) createInstance(props.getProperty("proxyFactory")));
    //延迟加载
    configuration.setLazyLoadingEnabled(booleanValueOf(props.getProperty("lazyLoadingEnabled"), false));
    //延迟加载时,每种属性是否还要按需加载
    configuration.setAggressiveLazyLoading(booleanValueOf(props.getProperty("aggressiveLazyLoading"), true));
    //允不允许多种结果集从一个单独 的语句中返回
    configuration.setMultipleResultSetsEnabled(booleanValueOf(props.getProperty("multipleResultSetsEnabled"), true));
    //使用列标签代替列名
    configuration.setUseColumnLabel(booleanValueOf(props.getProperty("useColumnLabel"), true));
    //允许 JDBC 支持生成的键
    configuration.setUseGeneratedKeys(booleanValueOf(props.getProperty("useGeneratedKeys"), false));
    //配置默认的执行器
    configuration.setDefaultExecutorType(ExecutorType.valueOf(props.getProperty("defaultExecutorType", "SIMPLE")));
    //超时时间
    configuration.setDefaultStatementTimeout(integerValueOf(props.getProperty("defaultStatementTimeout"), null));
    //是否将DB字段自动映射到驼峰式Java属性(A_COLUMN-->aColumn)
    configuration.setMapUnderscoreToCamelCase(booleanValueOf(props.getProperty("mapUnderscoreToCamelCase"), false));
    //嵌套语句上使用RowBounds
    configuration.setSafeRowBoundsEnabled(booleanValueOf(props.getProperty("safeRowBoundsEnabled"), false));
    //默认用session级别的缓存
    configuration.setLocalCacheScope(LocalCacheScope.valueOf(props.getProperty("localCacheScope", "SESSION")));
    //为null值设置jdbctype
    configuration.setJdbcTypeForNull(JdbcType.valueOf(props.getProperty("jdbcTypeForNull", "OTHER")));
    //Object的哪些方法将触发延迟加载
    configuration.setLazyLoadTriggerMethods(stringSetValueOf(props.getProperty("lazyLoadTriggerMethods"), "equals,clone,hashCode,toString"));
    //使用安全的ResultHandler
    configuration.setSafeResultHandlerEnabled(booleanValueOf(props.getProperty("safeResultHandlerEnabled"), true));
    //动态SQL生成语言所使用的脚本语言
    configuration.setDefaultScriptingLanguage(resolveClass(props.getProperty("defaultScriptingLanguage")));
    //当结果集中含有Null值时是否执行映射对象的setter或者Map对象的put方法。此设置对于原始类型如int,boolean等无效。 
    configuration.setCallSettersOnNulls(booleanValueOf(props.getProperty("callSettersOnNulls"), false));
    //logger名字的前缀
    configuration.setLogPrefix(props.getProperty("logPrefix"));
    //显式定义用什么log框架,不定义则用默认的自动发现jar包机制
    configuration.setLogImpl(resolveClass(props.getProperty("logImpl")));
    //配置工厂
    configuration.setConfigurationFactory(resolveClass(props.getProperty("configurationFactory")));
  }
}