本文整理了Java中org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping.getNullPolicy()方法的一些代码示例，展示了XMLCompositeObjectMapping.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。XMLCompositeObjectMapping.getNullPolicy()方法的具体详情如下：
包路径：org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping
类名称：XMLCompositeObjectMapping
方法名：getNullPolicy

XMLCompositeObjectMapping.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: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * @param parentRecord
 * @param aNodeValue
 * @param aNullPolicy
 */
public CompositeObjectMappingContentHandler(UnmarshalRecord parentRecord, //
    XMLCompositeObjectMappingNodeValue aNodeValue, XMLCompositeObjectMapping aMapping, //
    Attributes atts, XPathFragment aFragment, XMLDescriptor aDescriptor) {
  super(parentRecord);
  attributes = atts;
  mapping = aMapping;
  nullPolicy = mapping.getNullPolicy();
  nodeValue = aNodeValue;
  xPathFragment = aFragment;
  xmlDescriptor = aDescriptor;
}

代码示例来源：origin: stackoverflow.com

import org.eclipse.persistence.config.DescriptorCustomizer;
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping;
import org.eclipse.persistence.oxm.mappings.nullpolicy.XMLNullRepresentationType;

public class RootEntityCustomizer implements DescriptorCustomizer {

  @Override
  public void customize(ClassDescriptor descriptor) throws Exception {
    XMLCompositeObjectMapping entityTwoMapping = (XMLCompositeObjectMapping) descriptor.getMappingForAttributeName("entityTwo");

    entityTwoMapping.getNullPolicy().setNullRepresentedByEmptyNode(true);
    entityTwoMapping.getNullPolicy().setMarshalNullRepresentation(XMLNullRepresentationType.EMPTY_NODE);
  }

}

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

public boolean isNullCapableValue() {
  XMLField xmlField = (XMLField)xmlCompositeObjectMapping.getField();
  if (xmlField.getLastXPathFragment().isSelfFragment) {
    return false;
  }
  return xmlCompositeObjectMapping.getNullPolicy().getIsSetPerformedForAbsentNode();
}

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

public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, CacheKey cacheKey, AbstractSession executionSession, boolean isTargetProtected, Boolean[] wasCacheUsed) throws DatabaseException {
  Object fieldValue = row.get(this.getField());
  // BUG#2667762 there could be whitespace in the row instead of null
  if ((fieldValue == null) || (fieldValue instanceof String)) {
    return null;
  }
  XMLRecord nestedRow = (XMLRecord) this.getDescriptor().buildNestedRowFromFieldValue(fieldValue);
  // Check the policy to see if this DOM record represents null
  if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
    return null;
  }
  return valueFromRow(fieldValue, nestedRow, joinManager, sourceQuery, executionSession, isTargetProtected);
}

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

public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, AbstractSession executionSession) throws DatabaseException {
  Object fieldValue = row.get(this.getField());
  // BUG#2667762 there could be whitespace in the row instead of null
  if ((fieldValue == null) || (fieldValue instanceof String)) {
    return null;
  }
  XMLRecord nestedRow = (XMLRecord) this.getDescriptor().buildNestedRowFromFieldValue(fieldValue);
  // Check the policy to see if this DOM record represents null
  if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
    return null;
  }
  return valueFromRow(fieldValue, nestedRow, joinManager, sourceQuery, executionSession);
}

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

public Object valueFromRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, CacheKey cacheKey, AbstractSession executionSession, boolean isTargetProtected, Boolean[] wasCacheUsed) throws DatabaseException {
  Object fieldValue = row.get(this.getField());
  // BUG#2667762 there could be whitespace in the row instead of null
  if ((fieldValue == null) || (fieldValue instanceof String)) {
    return null;
  }
  XMLRecord nestedRow = (XMLRecord) this.getDescriptor().buildNestedRowFromFieldValue(fieldValue);
  // Check the policy to see if this DOM record represents null
  if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
    return null;
  }
  return valueFromRow(fieldValue, nestedRow, joinManager, sourceQuery, executionSession, isTargetProtected);
}

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

if (attributeValue != null) {
  fieldValue = buildCompositeRow(attributeValue, session, record, WriteType.UNDEFINED);
} else if (getNullPolicy().compositeObjectMarshal(record, parent, (XMLField) getField(), session)) {

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

if (attributeValue != null) {
  fieldValue = buildCompositeRow(attributeValue, session, record, WriteType.UNDEFINED);
} else if (getNullPolicy().compositeObjectMarshal(record, parent, (XMLField) getField(), session)) {

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

if (attributeValue != null) {                               
  fieldValue = buildCompositeRow(attributeValue, session, record);
} else if (getNullPolicy().compositeObjectMarshal(record, parent, (XMLField) getField(), session)) {

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

public void endSelfNodeValue(UnmarshalRecord unmarshalRecord, Attributes attributes) {
  if(xmlCompositeObjectMapping.getNullPolicy().valueIsNull(attributes)){
    xmlCompositeObjectMapping.setAttributeValueInObject(unmarshalRecord.getCurrentObject(), null);
    return;

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

if(xmlCompositeObjectMapping.getNullPolicy().isNullRepresentedByEmptyNode() || xmlCompositeObjectMapping.getNullPolicy().isNullRepresentedByXsiNil()) {
  String qnameString = xPathFragment.getLocalName();
  if(xPathFragment.getPrefix() != null) {
  boolean isNull = xmlCompositeObjectMapping.getNullPolicy().valueIsNull(atts);
  if (isNull) {
    xmlCompositeObjectMapping.setAttributeValueInObject(unmarshalRecord.getCurrentObject(), null);

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

if (getNullPolicy().getIsSetPerformedForAbsentNode()) {
    setAttributeValueInObject(targetObject, null);
  } else {
if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
  setAttributeValueInObject(targetObject, null);
  return null;

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

if (getNullPolicy().getIsSetPerformedForAbsentNode()) {
    setAttributeValueInObject(targetObject, null);
  } else {
if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
  setAttributeValueInObject(targetObject, null);
  return null;

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

if (getNullPolicy().getIsSetPerformedForAbsentNode()) {
    setAttributeValueInObject(targetObject, null);
  } else {
if (getNullPolicy().valueIsNull((Element) nestedRow.getDOM())) {
  setAttributeValueInObject(targetObject, null);
  return null;

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

return xmlCompositeObjectMapping.getNullPolicy().compositeObjectMarshal(xPathFragment, marshalRecord, object, session, namespaceResolver);

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

isNillable = ((XMLCompositeObjectMapping) mapping).getNullPolicy().isNullRepresentedByXsiNil();
} else {
  isNillable = ((XMLCompositeCollectionMapping) mapping).getNullPolicy().isNullRepresentedByXsiNil();