org.apache.ibatis.mapping.Discriminator Java Examples
The following examples show how to use
org.apache.ibatis.mapping.Discriminator.
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Example #1
| Source File: XMLMapperBuilder.java From Shop-for-JavaWeb with MIT License | 6 votes |
|
private Discriminator processDiscriminatorElement(XNode context,
Class<?> resultType, List<ResultMapping> resultMappings)
throws Exception {
String column = context.getStringAttribute("column");
String javaType = context.getStringAttribute("javaType");
String jdbcType = context.getStringAttribute("jdbcType");
String typeHandler = context.getStringAttribute("typeHandler");
Class<?> javaTypeClass = resolveClass(javaType);
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandlerClass = (Class<? extends TypeHandler<?>>) resolveClass(typeHandler);
JdbcType jdbcTypeEnum = resolveJdbcType(jdbcType);
Map<String, String> discriminatorMap = new HashMap<String, String>();
for (XNode caseChild : context.getChildren()) {
String value = caseChild.getStringAttribute("value");
String resultMap = caseChild.getStringAttribute("resultMap",
processNestedResultMappings(caseChild, resultMappings));
discriminatorMap.put(value, resultMap);
}
return builderAssistant
.buildDiscriminator(resultType, column, javaTypeClass,
jdbcTypeEnum, typeHandlerClass, discriminatorMap);
}
Example #2
| Source File: DefaultResultSetHandler.java From mybatis with Apache License 2.0 | 6 votes |
|
public ResultMap resolveDiscriminatedResultMap(ResultSet rs, ResultMap resultMap, String columnPrefix) throws SQLException {
Set<String> pastDiscriminators = new HashSet<String>();
Discriminator discriminator = resultMap.getDiscriminator();
while (discriminator != null) {
final Object value = getDiscriminatorValue(rs, discriminator, columnPrefix);
final String discriminatedMapId = discriminator.getMapIdFor(String.valueOf(value));
if (configuration.hasResultMap(discriminatedMapId)) {
resultMap = configuration.getResultMap(discriminatedMapId);
Discriminator lastDiscriminator = discriminator;
discriminator = resultMap.getDiscriminator();
if (discriminator == lastDiscriminator || !pastDiscriminators.add(discriminatedMapId)) {
break;
}
} else {
break;
}
}
return resultMap;
}
Example #3
| Source File: MapperAnnotationBuilder.java From mybaties with Apache License 2.0 | 6 votes |
|
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();
Class<? extends TypeHandler<?>> 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;
}
Example #4
| Source File: XMLMapperBuilder.java From mybatis with Apache License 2.0 | 6 votes |
|
private Discriminator processDiscriminatorElement(XNode context, Class<?> resultType, List<ResultMapping> resultMappings) throws Exception {
String column = context.getStringAttribute("column");
String javaType = context.getStringAttribute("javaType");
String jdbcType = context.getStringAttribute("jdbcType");
String typeHandler = context.getStringAttribute("typeHandler");
Class<?> javaTypeClass = resolveClass(javaType);
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandlerClass = (Class<? extends TypeHandler<?>>) resolveClass(typeHandler);
JdbcType jdbcTypeEnum = resolveJdbcType(jdbcType);
Map<String, String> discriminatorMap = new HashMap<String, String>();
for (XNode caseChild : context.getChildren()) {
String value = caseChild.getStringAttribute("value");
String resultMap = caseChild.getStringAttribute("resultMap", processNestedResultMappings(caseChild, resultMappings));
discriminatorMap.put(value, resultMap);
}
return builderAssistant.buildDiscriminator(resultType, column, javaTypeClass, jdbcTypeEnum, typeHandlerClass, discriminatorMap);
}
Example #5
| Source File: XMLMapperBuilder.java From mybaties with Apache License 2.0 | 6 votes |
|
private Discriminator processDiscriminatorElement(XNode context, Class<?> resultType, List<ResultMapping> resultMappings) throws Exception {
String column = context.getStringAttribute("column");
String javaType = context.getStringAttribute("javaType");
String jdbcType = context.getStringAttribute("jdbcType");
String typeHandler = context.getStringAttribute("typeHandler");
Class<?> javaTypeClass = resolveClass(javaType);
@SuppressWarnings("unchecked")
Class<? extends TypeHandler<?>> typeHandlerClass = (Class<? extends TypeHandler<?>>) resolveClass(typeHandler);
JdbcType jdbcTypeEnum = resolveJdbcType(jdbcType);
Map<String, String> discriminatorMap = new HashMap<String, String>();
for (XNode caseChild : context.getChildren()) {
String value = caseChild.getStringAttribute("value");
String resultMap = caseChild.getStringAttribute("resultMap", processNestedResultMappings(caseChild, resultMappings));
discriminatorMap.put(value, resultMap);
}
return builderAssistant.buildDiscriminator(resultType, column, javaTypeClass, jdbcTypeEnum, typeHandlerClass, discriminatorMap);
}
Example #6
| Source File: DefaultResultSetHandler.java From mybaties with Apache License 2.0 | 6 votes |
|
public ResultMap resolveDiscriminatedResultMap(ResultSet rs, ResultMap resultMap, String columnPrefix) throws SQLException {
Set<String> pastDiscriminators = new HashSet<String>();
Discriminator discriminator = resultMap.getDiscriminator();
while (discriminator != null) {
final Object value = getDiscriminatorValue(rs, discriminator, columnPrefix);
final String discriminatedMapId = discriminator.getMapIdFor(String.valueOf(value));
if (configuration.hasResultMap(discriminatedMapId)) {
resultMap = configuration.getResultMap(discriminatedMapId);
Discriminator lastDiscriminator = discriminator;
discriminator = resultMap.getDiscriminator();
if (discriminator == lastDiscriminator || !pastDiscriminators.add(discriminatedMapId)) {
break;
}
} else {
break;
}
}
return resultMap;
}
Example #7
| Source File: MapperAnnotationBuilder.java From mybatis with Apache License 2.0 | 6 votes |
|
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();
Class<? extends TypeHandler<?>> 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;
}
Example #8
| Source File: ExecutorTestHelper.java From mybatis with Apache License 2.0 | 5 votes |
|
public static MappedStatement prepareSelectDiscriminatedPost(final Configuration config) {
final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
final ResultMap discriminatorResultMap = new ResultMap.Builder(config, "postResultMap", HashMap.class, new ArrayList<ResultMapping>() {
{
add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
}
}).build();
config.addResultMap(discriminatorResultMap);
MappedStatement ms = new MappedStatement.Builder(config, "selectPosts", new StaticSqlSource(config,"SELECT * FROM post"), SqlCommandType.SELECT)
.resultMaps(new ArrayList<ResultMap>() {
{
add(new ResultMap.Builder(config, "defaultResultMap", HashMap.class, new ArrayList<ResultMapping>() {
{
add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
add(new ResultMapping.Builder(config, "blog_id", "blog_id", registry.getTypeHandler(int.class)).build());
}
})
.discriminator(new Discriminator.Builder(
config, new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(String.class)).build(),
new HashMap<String, String>() {
{
put("NEWS", discriminatorResultMap.getId());
put("VIDEOS", discriminatorResultMap.getId());
put("PODCASTS", discriminatorResultMap.getId());
//NEWS left out on purpose.
}
}).build()).build());
}
}).build();
return ms;
}
Example #9
| Source File: MapperBuilderAssistant.java From mybatis with Apache License 2.0 | 5 votes |
|
public Discriminator buildDiscriminator(
Class<?> resultType,
String column,
Class<?> javaType,
JdbcType jdbcType,
Class<? extends TypeHandler<?>> typeHandler,
Map<String, String> discriminatorMap) {
ResultMapping resultMapping = buildResultMapping(
resultType,
null,
column,
javaType,
jdbcType,
null,
null,
null,
null,
typeHandler,
new ArrayList<ResultFlag>(),
null,
null,
false);
Map<String, String> namespaceDiscriminatorMap = new HashMap<String, String>();
for (Map.Entry<String, String> e : discriminatorMap.entrySet()) {
String resultMap = e.getValue();
resultMap = applyCurrentNamespace(resultMap, true);
namespaceDiscriminatorMap.put(e.getKey(), resultMap);
}
Discriminator.Builder discriminatorBuilder = new Discriminator.Builder(configuration, resultMapping, namespaceDiscriminatorMap);
return discriminatorBuilder.build();
}
Example #10
| Source File: ResultMapResolver.java From mybatis with Apache License 2.0 | 5 votes |
|
public ResultMapResolver(MapperBuilderAssistant assistant, String id, Class<?> type, String extend, Discriminator discriminator, List<ResultMapping> resultMappings, Boolean autoMapping) {
this.assistant = assistant;
this.id = id;
this.type = type;
this.extend = extend;
this.discriminator = discriminator;
this.resultMappings = resultMappings;
this.autoMapping = autoMapping;
}
Example #11
| Source File: MapperAnnotationBuilder.java From mybatis with Apache License 2.0 | 5 votes |
|
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);
}
Example #12
| Source File: ExecutorTestHelper.java From mybaties with Apache License 2.0 | 5 votes |
|
public static MappedStatement prepareSelectDiscriminatedPost(final Configuration config) {
final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
final ResultMap discriminatorResultMap = new ResultMap.Builder(config, "postResultMap", HashMap.class, new ArrayList<ResultMapping>() {
{
add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
}
}).build();
config.addResultMap(discriminatorResultMap);
MappedStatement ms = new MappedStatement.Builder(config, "selectPosts", new StaticSqlSource(config,"SELECT * FROM post"), SqlCommandType.SELECT)
.resultMaps(new ArrayList<ResultMap>() {
{
add(new ResultMap.Builder(config, "defaultResultMap", HashMap.class, new ArrayList<ResultMapping>() {
{
add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
add(new ResultMapping.Builder(config, "blog_id", "blog_id", registry.getTypeHandler(int.class)).build());
}
})
.discriminator(new Discriminator.Builder(
config, new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(String.class)).build(),
new HashMap<String, String>() {
{
put("NEWS", discriminatorResultMap.getId());
put("VIDEOS", discriminatorResultMap.getId());
put("PODCASTS", discriminatorResultMap.getId());
//NEWS left out on purpose.
}
}).build()).build());
}
}).build();
return ms;
}
Example #13
| Source File: MapperBuilderAssistant.java From mybaties with Apache License 2.0 | 5 votes |
|
public Discriminator buildDiscriminator(
Class<?> resultType,
String column,
Class<?> javaType,
JdbcType jdbcType,
Class<? extends TypeHandler<?>> typeHandler,
Map<String, String> discriminatorMap) {
ResultMapping resultMapping = buildResultMapping(
resultType,
null,
column,
javaType,
jdbcType,
null,
null,
null,
null,
typeHandler,
new ArrayList<ResultFlag>(),
null,
null,
false);
Map<String, String> namespaceDiscriminatorMap = new HashMap<String, String>();
for (Map.Entry<String, String> e : discriminatorMap.entrySet()) {
String resultMap = e.getValue();
resultMap = applyCurrentNamespace(resultMap, true);
namespaceDiscriminatorMap.put(e.getKey(), resultMap);
}
Discriminator.Builder discriminatorBuilder = new Discriminator.Builder(configuration, resultMapping, namespaceDiscriminatorMap);
return discriminatorBuilder.build();
}
Example #14
| Source File: ResultMapResolver.java From mybaties with Apache License 2.0 | 5 votes |
|
public ResultMapResolver(MapperBuilderAssistant assistant, String id, Class<?> type, String extend, Discriminator discriminator, List<ResultMapping> resultMappings, Boolean autoMapping) {
this.assistant = assistant;
this.id = id;
this.type = type;
this.extend = extend;
this.discriminator = discriminator;
this.resultMappings = resultMappings;
this.autoMapping = autoMapping;
}
Example #15
| Source File: MapperAnnotationBuilder.java From mybaties with Apache License 2.0 | 5 votes |
|
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);
}
Example #16
| Source File: DefaultResultSetHandler.java From mybaties with Apache License 2.0 | 4 votes |
|
private Object getDiscriminatorValue(ResultSet rs, Discriminator discriminator, String columnPrefix) throws SQLException {
final ResultMapping resultMapping = discriminator.getResultMapping();
final TypeHandler<?> typeHandler = resultMapping.getTypeHandler();
return typeHandler.getResult(rs, prependPrefix(resultMapping.getColumn(), columnPrefix));
}
Example #17
| Source File: XMLMapperBuilder.java From mybaties with Apache License 2.0 | 4 votes |
|
private ResultMap resultMapElement(XNode resultMapNode, List<ResultMapping> additionalResultMappings) throws Exception {
//错误上下文
//取得标示符 ("resultMap[userResultMap]")
// <resultMap id="userResultMap" type="User">
// <id property="id" column="user_id" />
// <result property="username" column="username"/>
// <result property="password" column="password"/>
// </resultMap>
ErrorContext.instance().activity("processing " + resultMapNode.getValueBasedIdentifier());
String id = resultMapNode.getStringAttribute("id",
resultMapNode.getValueBasedIdentifier());
//一般拿type就可以了，后面3个难道是兼容老的代码？
String type = resultMapNode.getStringAttribute("type",
resultMapNode.getStringAttribute("ofType",
resultMapNode.getStringAttribute("resultType",
resultMapNode.getStringAttribute("javaType"))));
//高级功能，还支持继承?
// <resultMap id="carResult" type="Car" extends="vehicleResult">
// <result property="doorCount" column="door_count" />
// </resultMap>
String extend = resultMapNode.getStringAttribute("extends");
//autoMapping
Boolean autoMapping = resultMapNode.getBooleanAttribute("autoMapping");
Class<?> typeClass = resolveClass(type);
Discriminator discriminator = null;
List<ResultMapping> resultMappings = new ArrayList<ResultMapping>();
resultMappings.addAll(additionalResultMappings);
List<XNode> resultChildren = resultMapNode.getChildren();
for (XNode resultChild : resultChildren) {
if ("constructor".equals(resultChild.getName())) {
//解析result map的constructor
processConstructorElement(resultChild, typeClass, resultMappings);
} else if ("discriminator".equals(resultChild.getName())) {
//解析result map的discriminator
discriminator = processDiscriminatorElement(resultChild, typeClass, resultMappings);
} else {
List<ResultFlag> flags = new ArrayList<ResultFlag>();
if ("id".equals(resultChild.getName())) {
flags.add(ResultFlag.ID);
}
//调5.1.1 buildResultMappingFromContext,得到ResultMapping
resultMappings.add(buildResultMappingFromContext(resultChild, typeClass, flags));
}
}
//最后再调ResultMapResolver得到ResultMap
ResultMapResolver resultMapResolver = new ResultMapResolver(builderAssistant, id, typeClass, extend, discriminator, resultMappings, autoMapping);
try {
return resultMapResolver.resolve();
} catch (IncompleteElementException e) {
configuration.addIncompleteResultMap(resultMapResolver);
throw e;
}
}
Example #18
| Source File: XMLMapperBuilder.java From mybatis with Apache License 2.0 | 4 votes |
|
private ResultMap resultMapElement(XNode resultMapNode, List<ResultMapping> additionalResultMappings) throws Exception {
//错误上下文
//取得标示符 ("resultMap[userResultMap]")
// <resultMap id="userResultMap" type="User">
// <id property="id" column="user_id" />
// <result property="username" column="username"/>
// <result property="password" column="password"/>
// </resultMap>
ErrorContext.instance().activity("processing " + resultMapNode.getValueBasedIdentifier());
String id = resultMapNode.getStringAttribute("id",
resultMapNode.getValueBasedIdentifier());
//一般拿type就可以了，后面3个难道是兼容老的代码？
String type = resultMapNode.getStringAttribute("type",
resultMapNode.getStringAttribute("ofType",
resultMapNode.getStringAttribute("resultType",
resultMapNode.getStringAttribute("javaType"))));
//高级功能，还支持继承?
// <resultMap id="carResult" type="Car" extends="vehicleResult">
// <result property="doorCount" column="door_count" />
// </resultMap>
String extend = resultMapNode.getStringAttribute("extends");
//autoMapping
Boolean autoMapping = resultMapNode.getBooleanAttribute("autoMapping");
Class<?> typeClass = resolveClass(type);
Discriminator discriminator = null;
List<ResultMapping> resultMappings = new ArrayList<ResultMapping>();
resultMappings.addAll(additionalResultMappings);
List<XNode> resultChildren = resultMapNode.getChildren();
for (XNode resultChild : resultChildren) {
if ("constructor".equals(resultChild.getName())) {
//解析result map的constructor
processConstructorElement(resultChild, typeClass, resultMappings);
} else if ("discriminator".equals(resultChild.getName())) {
//解析result map的discriminator
discriminator = processDiscriminatorElement(resultChild, typeClass, resultMappings);
} else {
List<ResultFlag> flags = new ArrayList<ResultFlag>();
if ("id".equals(resultChild.getName())) {
flags.add(ResultFlag.ID);
}
//调5.1.1 buildResultMappingFromContext,得到ResultMapping
resultMappings.add(buildResultMappingFromContext(resultChild, typeClass, flags));
}
}
//最后再调ResultMapResolver得到ResultMap
ResultMapResolver resultMapResolver = new ResultMapResolver(builderAssistant, id, typeClass, extend, discriminator, resultMappings, autoMapping);
try {
return resultMapResolver.resolve();
} catch (IncompleteElementException e) {
configuration.addIncompleteResultMap(resultMapResolver);
throw e;
}
}
Example #19
| Source File: DefaultResultSetHandler.java From mybatis with Apache License 2.0 | 4 votes |
|
private Object getDiscriminatorValue(ResultSet rs, Discriminator discriminator, String columnPrefix) throws SQLException {
final ResultMapping resultMapping = discriminator.getResultMapping();
final TypeHandler<?> typeHandler = resultMapping.getTypeHandler();
return typeHandler.getResult(rs, prependPrefix(resultMapping.getColumn(), columnPrefix));
}
Example #20
| Source File: XMLMapperBuilder.java From Shop-for-JavaWeb with MIT License | 4 votes |
|
private ResultMap resultMapElement(XNode resultMapNode,
List<ResultMapping> additionalResultMappings) throws Exception {
ErrorContext.instance().activity(
"processing " + resultMapNode.getValueBasedIdentifier());
String id = resultMapNode.getStringAttribute("id",
resultMapNode.getValueBasedIdentifier());
String type = resultMapNode.getStringAttribute("type", resultMapNode
.getStringAttribute("ofType", resultMapNode.getStringAttribute(
"resultType",
resultMapNode.getStringAttribute("javaType"))));
String extend = resultMapNode.getStringAttribute("extends");
Boolean autoMapping = resultMapNode.getBooleanAttribute("autoMapping");
Class<?> typeClass = resolveClass(type);
Discriminator discriminator = null;
List<ResultMapping> resultMappings = new ArrayList<ResultMapping>();
resultMappings.addAll(additionalResultMappings);
List<XNode> resultChildren = resultMapNode.getChildren();
for (XNode resultChild : resultChildren) {
if ("constructor".equals(resultChild.getName())) {
processConstructorElement(resultChild, typeClass,
resultMappings);
} else if ("discriminator".equals(resultChild.getName())) {
discriminator = processDiscriminatorElement(resultChild,
typeClass, resultMappings);
} else {
ArrayList<ResultFlag> flags = new ArrayList<ResultFlag>();
if ("id".equals(resultChild.getName())) {
flags.add(ResultFlag.ID);
}
resultMappings.add(buildResultMappingFromContext(resultChild,
typeClass, flags));
}
}
ResultMapResolver resultMapResolver = new ResultMapResolver(
builderAssistant, id, typeClass, extend, discriminator,
resultMappings, autoMapping);
try {
return resultMapResolver.resolve();
} catch (IncompleteElementException e) {
configuration.addIncompleteResultMap(resultMapResolver);
throw e;
}
}
