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Java DiscriminatorValue類代碼示例

本文整理匯總了Java中javax.persistence.DiscriminatorValue類的典型用法代碼示例。如果您正苦於以下問題：Java DiscriminatorValue類的具體用法？Java DiscriminatorValue怎麽用？Java DiscriminatorValue使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。


DiscriminatorValue類屬於javax.persistence包，在下文中一共展示了DiscriminatorValue類的8個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: buildInheritance

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
/**
 * Determine the inheritance type and discriminator properties.
 */
private void buildInheritance() {
	// Check, if we've got an explicit inheritance type
	final Inheritance inheritance = this.entityClass.getAnnotation(Inheritance.class);
	if (inheritance != null) {
		this.inheritanceType = inheritance.strategy();
	}

	// Find the root of our hierarchy
	this.hierarchyRoot = this;
	findHierarchyRoot(this.entityClass.getSuperclass());

	// We scan only classes that we are about to write
	// So we don't know, that there is a subclass entity - until we find one
	// This could be to late for InheritanceType.SINGLE_TABLE - the defaault type
	// That's why we build a discriminator, if one of the inheritance annotations exists
	if (this.inheritanceType == null && this.entityClass.isAnnotationPresent(DiscriminatorColumn.class)
			|| this.entityClass.isAnnotationPresent(DiscriminatorValue.class)) {
		this.inheritanceType = InheritanceType.SINGLE_TABLE;
	}

	buildDiscriminator();
}
開發者ID:liefke，項目名稱:org.fastnate，代碼行數:26，代碼來源:EntityClass.java

示例2: getDiscriminatorValue

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
private DiscriminatorValue getDiscriminatorValue(Element tree, XMLContext.Default defaults) {
	Element element = tree != null ? tree.element( "discriminator-value" ) : null;
	if ( element != null ) {
		AnnotationDescriptor ad = new AnnotationDescriptor( DiscriminatorValue.class );
		copyStringElement( element, ad, "value" );
		return AnnotationFactory.create( ad );
	}
	else if ( defaults.canUseJavaAnnotations() ) {
		return getPhysicalAnnotation( DiscriminatorValue.class );
	}
	else {
		return null;
	}
}
開發者ID:lamsfoundation，項目名稱:lams，代碼行數:15，代碼來源:JPAOverriddenAnnotationReader.java

示例3: testGetEntityClassFromNodeLabelsHavingTheLabelDeclaredByTheClassNameWithSingleTableInheritance

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
@Test
public void testGetEntityClassFromNodeLabelsHavingTheLabelDeclaredByTheClassNameWithSingleTableInheritance() throws Exception {
    final String simpleClassNameBase = "EntityClass";
    final String simpleClassNameA = "SubEntityClassA";
    final String simpleClassNameB = "SubEntityClassB";

    final JPackage jp = jCodeModel.rootPackage();
    final JDefinedClass jBaseClass = jp._class(JMod.PUBLIC, simpleClassNameBase);
    jBaseClass.annotate(Entity.class);
    jBaseClass.annotate(Inheritance.class).param("strategy", InheritanceType.SINGLE_TABLE);
    jBaseClass.annotate(DiscriminatorColumn.class).param("name", "TYPE");

    final JDefinedClass jSubclassA = jp._class(JMod.PUBLIC, simpleClassNameA)._extends(jBaseClass);
    jSubclassA.annotate(Entity.class);
    jSubclassA.annotate(DiscriminatorValue.class).param("value", "A");

    final JDefinedClass jSubclassB = jp._class(JMod.PUBLIC, simpleClassNameB)._extends(jBaseClass);
    jSubclassB.annotate(Entity.class);
    jSubclassB.annotate(DiscriminatorValue.class).param("value", "B");

    buildModel(testFolder.getRoot(), jCodeModel);

    compileModel(testFolder.getRoot());

    final Class<?> baseClass = loadClass(testFolder.getRoot(), jBaseClass.name());
    final Class<?> subClassA = loadClass(testFolder.getRoot(), jSubclassA.name());
    final Class<?> subClassB = loadClass(testFolder.getRoot(), jSubclassB.name());

    final Class<?> clazz = EntityUtils.getEntityClassFromNodeLabels(Arrays.asList(simpleClassNameBase),
            Arrays.asList(baseClass, subClassA, subClassB));

    assertThat(clazz, equalTo(baseClass));
}
開發者ID:dadrus，項目名稱:jpa-unit，代碼行數:34，代碼來源:EntityUtilsTest.java

示例4: testGetEntityClassFromNodeLabelsHavingTheLabelDeclaredByTheTableAnnotationWithSingleTableInheritance

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
@Test
public void testGetEntityClassFromNodeLabelsHavingTheLabelDeclaredByTheTableAnnotationWithSingleTableInheritance() throws Exception {
    final String simpleClassNameBase = "EntityClass";
    final String simpleClassNameA = "SubEntityClassA";
    final String simpleClassNameB = "SubEntityClassB";

    final String nodeLabel = "ENTITY_CLASS";

    final JPackage jp = jCodeModel.rootPackage();
    final JDefinedClass jBaseClass = jp._class(JMod.PUBLIC, simpleClassNameBase);
    jBaseClass.annotate(Entity.class);
    jBaseClass.annotate(Table.class).param("name", nodeLabel);
    jBaseClass.annotate(Inheritance.class).param("strategy", InheritanceType.SINGLE_TABLE);
    jBaseClass.annotate(DiscriminatorColumn.class).param("name", "TYPE");

    final JDefinedClass jSubclassA = jp._class(JMod.PUBLIC, simpleClassNameA)._extends(jBaseClass);
    jSubclassA.annotate(Entity.class);
    jSubclassA.annotate(DiscriminatorValue.class).param("value", "A");

    final JDefinedClass jSubclassB = jp._class(JMod.PUBLIC, simpleClassNameB)._extends(jBaseClass);
    jSubclassB.annotate(Entity.class);
    jSubclassB.annotate(DiscriminatorValue.class).param("value", "B");

    buildModel(testFolder.getRoot(), jCodeModel);

    compileModel(testFolder.getRoot());

    final Class<?> baseClass = loadClass(testFolder.getRoot(), jBaseClass.name());
    final Class<?> subClassA = loadClass(testFolder.getRoot(), jSubclassA.name());
    final Class<?> subClassB = loadClass(testFolder.getRoot(), jSubclassB.name());

    final Class<?> clazz = EntityUtils.getEntityClassFromNodeLabels(Arrays.asList(nodeLabel),
            Arrays.asList(baseClass, subClassA, subClassB));

    assertThat(clazz, equalTo(baseClass));
}
開發者ID:dadrus，項目名稱:jpa-unit，代碼行數:37，代碼來源:EntityUtilsTest.java

示例5: buildDiscriminator

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
private ColumnExpression buildDiscriminator(final EntityClass<?> c, final DiscriminatorColumn column) {
	final DiscriminatorType type;
	final int maxLength;
	if (column == null) {
		type = DiscriminatorType.STRING;
		final int defaultMaxLength = 31;
		maxLength = defaultMaxLength;
	} else {
		type = column.discriminatorType();
		maxLength = column.length();
	}

	final DiscriminatorValue value = this.entityClass.getAnnotation(DiscriminatorValue.class);
	if (type == DiscriminatorType.INTEGER) {
		return PrimitiveColumnExpression.create(
				value == null ? c.getEntityName().hashCode() : Integer.parseInt(value.value()),
				getContext().getDialect());
	}
	final String v = value == null ? c.getEntityName() : value.value();
	if (StringUtils.isEmpty(v)) {
		throw new IllegalArgumentException("Missing discriminator value for: " + c.getEntityClass());
	}
	if (type == DiscriminatorType.STRING) {
		return PrimitiveColumnExpression.create(v.length() <= maxLength ? v : v.substring(0, maxLength),
				getContext().getDialect());
	} else if (type == DiscriminatorType.CHAR) {
		return PrimitiveColumnExpression.create(v.substring(0, 1), getContext().getDialect());
	}
	throw new IllegalArgumentException("Unknown discriminator type: " + type);
}
開發者ID:liefke，項目名稱:org.fastnate，代碼行數:31，代碼來源:EntityClass.java

示例6: getDiscriminatorValue

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
public String getDiscriminatorValue()
{
	final DiscriminatorValue annotation = clazz.getAnnotation(DiscriminatorValue.class);

	if (annotation != null)
		return annotation.value();
	else
		return clazz.getName();
}
開發者ID:petergeneric，項目名稱:stdlib，代碼行數:10，代碼來源:QEntity.java

示例7: processSingleTableDiscriminatorProperties

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
/**
 * Process all discriminator-related metadata per rules for "single table" inheritance
 */
private static Ejb3DiscriminatorColumn processSingleTableDiscriminatorProperties(
		XClass clazzToProcess,
		Mappings mappings,
		InheritanceState inheritanceState,
		EntityBinder entityBinder) {
	final boolean isRoot = !inheritanceState.hasParents();

	Ejb3DiscriminatorColumn discriminatorColumn = null;
	javax.persistence.DiscriminatorColumn discAnn = clazzToProcess.getAnnotation(
			javax.persistence.DiscriminatorColumn.class
	);
	DiscriminatorType discriminatorType = discAnn != null
			? discAnn.discriminatorType()
			: DiscriminatorType.STRING;

	org.hibernate.annotations.DiscriminatorFormula discFormulaAnn = clazzToProcess.getAnnotation(
			org.hibernate.annotations.DiscriminatorFormula.class
	);
	if ( isRoot ) {
		discriminatorColumn = Ejb3DiscriminatorColumn.buildDiscriminatorColumn(
				discriminatorType,
				discAnn,
				discFormulaAnn,
				mappings
		);
	}
	if ( discAnn != null && !isRoot ) {
		LOG.invalidDiscriminatorAnnotation( clazzToProcess.getName() );
	}

	final String discriminatorValue = clazzToProcess.isAnnotationPresent( DiscriminatorValue.class )
			? clazzToProcess.getAnnotation( DiscriminatorValue.class ).value()
			: null;
	entityBinder.setDiscriminatorValue( discriminatorValue );

	DiscriminatorOptions discriminatorOptions = clazzToProcess.getAnnotation( DiscriminatorOptions.class );
	if ( discriminatorOptions != null) {
		entityBinder.setForceDiscriminator( discriminatorOptions.force() );
		entityBinder.setInsertableDiscriminator( discriminatorOptions.insert() );
	}

	return discriminatorColumn;
}
開發者ID:lamsfoundation，項目名稱:lams，代碼行數:47，代碼來源:AnnotationBinder.java

示例8: processJoinedDiscriminatorProperties

import javax.persistence.DiscriminatorValue; //導入依賴的package包/類
/**
 * Process all discriminator-related metadata per rules for "joined" inheritance
 */
private static Ejb3DiscriminatorColumn processJoinedDiscriminatorProperties(
		XClass clazzToProcess,
		Mappings mappings,
		InheritanceState inheritanceState,
		EntityBinder entityBinder) {
	if ( clazzToProcess.isAnnotationPresent( DiscriminatorFormula.class ) ) {
		throw new MappingException( "@DiscriminatorFormula on joined inheritance not supported at this time" );
	}


	// DiscriminatorValue handling ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

	final DiscriminatorValue discriminatorValueAnnotation = clazzToProcess.getAnnotation( DiscriminatorValue.class );
	final String discriminatorValue = discriminatorValueAnnotation != null
			? clazzToProcess.getAnnotation( DiscriminatorValue.class ).value()
			: null;
	entityBinder.setDiscriminatorValue( discriminatorValue );


	// DiscriminatorColumn handling ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

	final DiscriminatorColumn discriminatorColumnAnnotation = clazzToProcess.getAnnotation( DiscriminatorColumn.class );
	if ( !inheritanceState.hasParents() ) {
		// we want to process the discriminator column if either:
		//		1) There is an explicit DiscriminatorColumn annotation && we are not told to ignore them
		//		2) There is not an explicit DiscriminatorColumn annotation && we are told to create them implicitly
		final boolean generateDiscriminatorColumn;
		if ( discriminatorColumnAnnotation != null ) {
			if ( mappings.ignoreExplicitDiscriminatorColumnForJoinedInheritance() ) {
				LOG.debugf( "Ignoring explicit DiscriminatorColumn annotation on ", clazzToProcess.getName() );
				generateDiscriminatorColumn = false;
			}
			else {
				LOG.applyingExplicitDiscriminatorColumnForJoined(
						clazzToProcess.getName(),
						AvailableSettings.IGNORE_EXPLICIT_DISCRIMINATOR_COLUMNS_FOR_JOINED_SUBCLASS
				);
				generateDiscriminatorColumn = true;
			}
		}
		else {
			if ( mappings.useImplicitDiscriminatorColumnForJoinedInheritance() ) {
				LOG.debug( "Applying implicit DiscriminatorColumn using DiscriminatorColumn defaults" );
				generateDiscriminatorColumn = true;
			}
			else {
				LOG.debug( "Ignoring implicit (absent) DiscriminatorColumn" );
				generateDiscriminatorColumn = false;
			}
		}

		if ( generateDiscriminatorColumn ) {
			final DiscriminatorType discriminatorType = discriminatorColumnAnnotation != null
					? discriminatorColumnAnnotation.discriminatorType()
					: DiscriminatorType.STRING;
			return Ejb3DiscriminatorColumn.buildDiscriminatorColumn(
					discriminatorType,
					discriminatorColumnAnnotation,
					null,
					mappings
			);
		}
	}
	else {
		if ( discriminatorColumnAnnotation != null ) {
			LOG.invalidDiscriminatorAnnotation( clazzToProcess.getName() );
		}
	}

	return null;
}
開發者ID:lamsfoundation，項目名稱:lams，代碼行數:75，代碼來源:AnnotationBinder.java


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