org.eclipse.persistence.oxm.mappings.XMLDirectMapping.getNullPolicy()方法的使用及代码示例

x33g5p2x  于2022-02-03 转载在 其他  
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本文整理了Java中org.eclipse.persistence.oxm.mappings.XMLDirectMapping.getNullPolicy()方法的一些代码示例，展示了XMLDirectMapping.getNullPolicy()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。XMLDirectMapping.getNullPolicy()方法的具体详情如下：
包路径：org.eclipse.persistence.oxm.mappings.XMLDirectMapping
类名称：XMLDirectMapping
方法名：getNullPolicy

XMLDirectMapping.getNullPolicy介绍

[英]INTERNAL: Get the AbstractNullPolicy from the Mapping.
The default policy is NullPolicy.
[中]内部：从映射中获取AbstractNullPolicy。
默认策略为NullPolicy。

代码示例

代码示例来源：origin: stackoverflow.com

  1. import org.eclipse.persistence.config.DescriptorCustomizer;
  2. import org.eclipse.persistence.descriptors.ClassDescriptor;
  3. import org.eclipse.persistence.mappings.DatabaseMapping;
  4. import org.eclipse.persistence.oxm.mappings.XMLDirectMapping;
  5. import org.eclipse.persistence.oxm.mappings.nullpolicy.XMLNullRepresentationType;
  7. public class AddressCustomizer implements DescriptorCustomizer {
  9.   @Override
  10.   public void customize(ClassDescriptor descriptor) throws Exception {
  11.     for(DatabaseMapping mapping : descriptor.getMappings()) {
  12.       if(mapping.isAbstractDirectMapping()) {
  13.         XMLDirectMapping xmlDirectMapping = (XMLDirectMapping) mapping;
  14.         xmlDirectMapping.getNullPolicy().setMarshalNullRepresentation(XMLNullRepresentationType.EMPTY_NODE);
  15.         xmlDirectMapping.getNullPolicy().setNullRepresentedByEmptyNode(true);
  16.       }
  17.     }
  18.   }
  20. }

代码示例来源：origin: stackoverflow.com

  1. import org.eclipse.persistence.descriptors.ClassDescriptor;
  2. import org.eclipse.persistence.mappings.DatabaseMapping;
  3. import org.eclipse.persistence.oxm.mappings.XMLDirectMapping;
  4. import org.eclipse.persistence.oxm.mappings.nullpolicy.XMLNullRepresentationType;
  5. import org.eclipse.persistence.sessions.*;
  7. public class NullPolicySessionEventListener extends SessionEventAdapter {
  9.   @Override
  10.   public void preLogin(SessionEvent event) {
  11.     Project project = event.getSession().getProject();
  12.     for(ClassDescriptor descriptor : project.getOrderedDescriptors()) {
  13.       for(DatabaseMapping mapping : descriptor.getMappings()) {
  14.         if(mapping.isAbstractDirectMapping()) {
  15.           XMLDirectMapping xmlDirectMapping = (XMLDirectMapping) mapping;
  16.           xmlDirectMapping.getNullPolicy().setMarshalNullRepresentation(XMLNullRepresentationType.EMPTY_NODE);
  17.           xmlDirectMapping.getNullPolicy().setNullRepresentedByEmptyNode(true);
  18.         }
  19.       }
  20.     }
  21.    }
  23. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. public boolean isWhitespaceAware() {
  2.   return !xmlDirectMapping.getNullPolicy().isNullRepresentedByEmptyNode();
  3. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. public boolean isNullCapableValue() {
  2.   return xmlDirectMapping.getNullPolicy().getIsSetPerformedForAbsentNode();
  3. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. public void setXPathNode(XPathNode xPathNode) {
  2.   super.setXPathNode(xPathNode);
  3.   xmlDirectMapping.getNullPolicy().xPathNode(xPathNode, this);
  4. }

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

  1. public void writeSingleValue(Object value, Object parent, XMLRecord row, AbstractSession session) {
  2.   Object fieldValue = getFieldValue(value, session, row);
  3.   if(fieldValue == null && getNullPolicy() != null) {
  4.     getNullPolicy().directMarshal((Field) this.getField(), row, parent);
  5.   } else {
  6.     writeValueIntoRow(row, getField(), fieldValue);
  7.   }
  8. }

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

  1. public void writeSingleValue(Object value, Object parent, XMLRecord row, AbstractSession session) {
  2.   Object fieldValue = getFieldValue(value, session, row);
  3.   if(fieldValue == null && getNullPolicy() != null) {
  4.     getNullPolicy().directMarshal((Field) this.getField(), row, parent);
  5.   } else {
  6.     writeValueIntoRow(row, getField(), fieldValue);
  7.   }
  8. }

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

  1. /**
  2.  * INTERNAL:
  3.  * Return the mapping's attribute value from the row.
  4.  * The execution session is passed for the case of building a UnitOfWork clone
  5.  * directly from a row, the session set in the query will not know which platform to use
  6.  * for converting the value.  Allows the correct session to be passed in.
  7.  */
  8. public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery query, CacheKey cacheKey, AbstractSession executionSession, boolean isTargetProtected, Boolean[] wasCacheUsed) {
  9.   // PERF: Direct variable access.
  10.   boolean shouldCheckForXsiNil = getNullPolicy().isNullRepresentedByXsiNil();
  11.   return getAttributeValue(((DOMRecord)row).getIndicatingNoEntry(this.field, false, shouldCheckForXsiNil), executionSession, (XMLRecord)row);
  12. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. /**
  2.  * INTERNAL:
  3.  * Return the mapping's attribute value from the row.
  4.  * The execution session is passed for the case of building a UnitOfWork clone
  5.  * directly from a row, the session set in the query will not know which platform to use
  6.  * for converting the value.  Allows the correct session to be passed in.
  7.  */
  8. public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery query, AbstractSession executionSession) {
  9.   // PERF: Direct variable access.
  10.   boolean shouldCheckForXsiNil = getNullPolicy().isNullRepresentedByXsiNil();
  11.   return getAttributeValue(((DOMRecord)row).getIndicatingNoEntry(this.field, false, shouldCheckForXsiNil), executionSession, (XMLRecord)row);
  12. }

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

  1. /**
  2.  * INTERNAL:
  3.  * Return the mapping's attribute value from the row.
  4.  * The execution session is passed for the case of building a UnitOfWork clone
  5.  * directly from a row, the session set in the query will not know which platform to use
  6.  * for converting the value.  Allows the correct session to be passed in.
  7.  */
  8. public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery query, CacheKey cacheKey, AbstractSession executionSession, boolean isTargetProtected, Boolean[] wasCacheUsed) {
  9.   // PERF: Direct variable access.
  10.   boolean shouldCheckForXsiNil = getNullPolicy().isNullRepresentedByXsiNil();
  11.   return getAttributeValue(((DOMRecord)row).getIndicatingNoEntry(this.field, false, shouldCheckForXsiNil), executionSession, (XMLRecord)row);
  12. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. containerAttributeMapping.setSetMethodName("setContainerAttributeName");
  2. containerAttributeMapping.setXPath("container-attribute/text()");
  3. ((NullPolicy)containerAttributeMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  4. descriptor.addMapping(containerAttributeMapping);
  5. containerGetMethodMapping.setSetMethodName("setContainerGetMethodName");
  6. containerGetMethodMapping.setXPath("container-get-method/text()");
  7. ((NullPolicy)containerGetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  8. descriptor.addMapping(containerGetMethodMapping);
  9. containerSetMethodMapping.setSetMethodName("setContainerSetMethodName");
  10. containerSetMethodMapping.setXPath("container-set-method/text()");
  11. ((NullPolicy)containerSetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  12. descriptor.addMapping(containerSetMethodMapping);

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

  1. containerAttributeMapping.setSetMethodName("setContainerAttributeName");
  2. containerAttributeMapping.setXPath("container-attribute/text()");
  3. ((NullPolicy)containerAttributeMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  4. descriptor.addMapping(containerAttributeMapping);
  5. containerGetMethodMapping.setSetMethodName("setContainerGetMethodName");
  6. containerGetMethodMapping.setXPath("container-get-method/text()");
  7. ((NullPolicy)containerGetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  8. descriptor.addMapping(containerGetMethodMapping);
  9. containerSetMethodMapping.setSetMethodName("setContainerSetMethodName");
  10. containerSetMethodMapping.setXPath("container-set-method/text()");
  11. ((NullPolicy)containerSetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  12. descriptor.addMapping(containerSetMethodMapping);

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

  1. containerAttributeMapping.setSetMethodName("setContainerAttributeName");
  2. containerAttributeMapping.setXPath("container-attribute/text()");
  3. ((NullPolicy)containerAttributeMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  4. descriptor.addMapping(containerAttributeMapping);
  5. containerGetMethodMapping.setSetMethodName("setContainerGetMethodName");
  6. containerGetMethodMapping.setXPath("container-get-method/text()");
  7. ((NullPolicy)containerGetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  8. descriptor.addMapping(containerGetMethodMapping);
  9. containerSetMethodMapping.setSetMethodName("setContainerSetMethodName");
  10. containerSetMethodMapping.setXPath("container-set-method/text()");
  11. ((NullPolicy)containerSetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  12. descriptor.addMapping(containerSetMethodMapping);

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.sdo

  1. mapping.getNullPolicy().setNullRepresentedByEmptyNode(false);
  2. mapping.getNullPolicy().setNullRepresentedByEmptyNode(true);

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

  1. mapping.getNullPolicy().setNullRepresentedByEmptyNode(false);
  2. mapping.getNullPolicy().setNullRepresentedByEmptyNode(true);

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

  1. containerAttributeMapping.setSetMethodName("setContainerAttributeName");
  2. containerAttributeMapping.setXPath("container-attribute/text()");
  3. ((NullPolicy)containerAttributeMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  4. descriptor.addMapping(containerAttributeMapping);
  5. containerGetMethodMapping.setSetMethodName("setContainerGetMethodName");
  6. containerGetMethodMapping.setXPath("container-get-method/text()");
  7. ((NullPolicy)containerGetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  8. descriptor.addMapping(containerGetMethodMapping);
  9. containerSetMethodMapping.setSetMethodName("setContainerSetMethodName");
  10. containerSetMethodMapping.setXPath("container-set-method/text()");
  11. ((NullPolicy)containerSetMethodMapping.getNullPolicy()).setSetPerformedForAbsentNode(false);
  12. descriptor.addMapping(containerSetMethodMapping);

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. public boolean marshalSingleValue(XPathFragment xPathFragment, MarshalRecord marshalRecord, Object object, Object objectValue, AbstractSession session, NamespaceResolver namespaceResolver, MarshalContext marshalContext) {
  2.   Object fieldValue = xmlDirectMapping.getFieldValue(objectValue, session, marshalRecord);
  3.   // Check for a null value 
  4.   if (null == fieldValue) {
  5.     // Perform marshal operations based on the null policy
  6.     return xmlDirectMapping.getNullPolicy().directMarshal(xPathFragment, marshalRecord, object, session, namespaceResolver);
  7.   } else {
  8.     QName schemaType = getSchemaType((XMLField) xmlDirectMapping.getField(), fieldValue, session);
  9.     String stringValue = getValueToWrite(schemaType, fieldValue, (XMLConversionManager) session.getDatasourcePlatform().getConversionManager(), namespaceResolver);
  10.     XPathFragment groupingFragment = marshalRecord.openStartGroupingElements(namespaceResolver);
  11.     if (xPathFragment.isAttribute()) {
  12.       marshalRecord.attribute(xPathFragment, namespaceResolver, stringValue);
  13.       marshalRecord.closeStartGroupingElements(groupingFragment);
  14.     } else {
  15.       marshalRecord.closeStartGroupingElements(groupingFragment);
  16.       if (xmlDirectMapping.isCDATA()) {
  17.         marshalRecord.cdata(stringValue);
  18.       } else {
  19.         marshalRecord.characters(stringValue);
  20.       }
  21.     }
  22.     return true;
  23.   }
  24. }

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

  1. protected ClassDescriptor buildDatabaseFieldDescriptor() {
  2.   XMLDescriptor descriptor = new XMLDescriptor();
  3.   descriptor.setJavaClass(DatabaseField.class);
  4.   descriptor.setDefaultRootElement("field");
  5.   descriptor.getInheritancePolicy().setClassIndicatorField(new XMLField("@xsi:type"));
  6.   descriptor.getInheritancePolicy().addClassIndicator(DatabaseField.class, getSecondaryNamespaceXPath() + "column");
  7.   descriptor.getInheritancePolicy().addClassIndicator(XMLField.class, getPrimaryNamespaceXPath() + "node");
  8.   descriptor.getInheritancePolicy().addClassIndicator(XMLUnionField.class, getPrimaryNamespaceXPath() + "union-node");
  9.   XMLDirectMapping tableMapping = new XMLDirectMapping();
  10.   tableMapping.setAttributeName("table");
  11.   tableMapping.setGetMethodName("getTableName");
  12.   tableMapping.setSetMethodName("setTableName");
  13.   tableMapping.setXPath("@table");
  14.   tableMapping.setNullValue("");
  15.   descriptor.addMapping(tableMapping);
  16.   XMLDirectMapping nameMapping = new XMLDirectMapping();
  17.   nameMapping.setAttributeName("name");
  18.   nameMapping.setGetMethodName("getName");
  19.   nameMapping.setSetMethodName("setName");
  20.   nameMapping.setXPath("@name");
  21.   nameMapping.getNullPolicy().setNullRepresentedByEmptyNode(false);
  22.   descriptor.addMapping(nameMapping);
  23.   return descriptor;
  24. }

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

  1. protected ClassDescriptor buildDatabaseFieldDescriptor() {
  2.   XMLDescriptor descriptor = new XMLDescriptor();
  3.   descriptor.setJavaClass(DatabaseField.class);
  4.   descriptor.setDefaultRootElement("field");
  5.   descriptor.getInheritancePolicy().setClassIndicatorField(new XMLField("@xsi:type"));
  6.   descriptor.getInheritancePolicy().addClassIndicator(DatabaseField.class, getSecondaryNamespaceXPath() + "column");
  7.   descriptor.getInheritancePolicy().addClassIndicator(XMLField.class, getPrimaryNamespaceXPath() + "node");
  8.   descriptor.getInheritancePolicy().addClassIndicator(XMLUnionField.class, getPrimaryNamespaceXPath() + "union-node");
  9.   XMLSchemaReference reference = new XMLSchemaClassPathReference();
  10.   reference.setSchemaContext("/"+ getSecondaryNamespaceXPath() + "column");
  11.   descriptor.setSchemaReference(reference);
  12.   XMLDirectMapping tableMapping = new XMLDirectMapping();
  13.   tableMapping.setAttributeName("table");
  14.   tableMapping.setGetMethodName("getTableName");
  15.   tableMapping.setSetMethodName("setTableName");
  16.   tableMapping.setXPath("@table");
  17.   tableMapping.setNullValue("");
  18.   descriptor.addMapping(tableMapping);
  19.   XMLDirectMapping nameMapping = new XMLDirectMapping();
  20.   nameMapping.setAttributeName("name");
  21.   nameMapping.setGetMethodName("getName");
  22.   nameMapping.setSetMethodName("setName");
  23.   nameMapping.setXPath("@name");
  24.   nameMapping.getNullPolicy().setNullRepresentedByEmptyNode(false);
  25.   descriptor.addMapping(nameMapping);
  26.   return descriptor;
  27. }

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

  1. protected ClassDescriptor buildDatabaseFieldDescriptor() {
  2.   XMLDescriptor descriptor = new XMLDescriptor();
  3.   descriptor.setJavaClass(DatabaseField.class);
  4.   descriptor.setDefaultRootElement("field");
  5.   descriptor.getInheritancePolicy().setClassIndicatorField(new XMLField("@xsi:type"));
  6.   descriptor.getInheritancePolicy().addClassIndicator(DatabaseField.class, getSecondaryNamespaceXPath() + "column");
  7.   descriptor.getInheritancePolicy().addClassIndicator(XMLField.class, getPrimaryNamespaceXPath() + "node");
  8.   descriptor.getInheritancePolicy().addClassIndicator(XMLUnionField.class, getPrimaryNamespaceXPath() + "union-node");
  9.   XMLSchemaReference reference = new XMLSchemaClassPathReference();
  10.   reference.setSchemaContext("/"+ getSecondaryNamespaceXPath() + "column");
  11.   descriptor.setSchemaReference(reference);
  12.   
  13.   XMLDirectMapping tableMapping = new XMLDirectMapping();
  14.   tableMapping.setAttributeName("table");
  15.   tableMapping.setGetMethodName("getTableName");
  16.   tableMapping.setSetMethodName("setTableName");
  17.   tableMapping.setXPath("@table");
  18.   tableMapping.setNullValue("");
  19.   descriptor.addMapping(tableMapping);
  20.   XMLDirectMapping nameMapping = new XMLDirectMapping();
  21.   nameMapping.setAttributeName("name");
  22.   nameMapping.setGetMethodName("getName");
  23.   nameMapping.setSetMethodName("setName");
  24.   nameMapping.setXPath("@name");
  25.   nameMapping.getNullPolicy().setNullRepresentedByEmptyNode(false);
  26.   descriptor.addMapping(nameMapping);
  27.   return descriptor;
  28. }

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