javax.jcr.version.Version.getLinearPredecessor()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中javax.jcr.version.Version.getLinearPredecessor()方法的一些代码示例，展示了Version.getLinearPredecessor()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。Version.getLinearPredecessor()方法的具体详情如下：
包路径：javax.jcr.version.Version
类名称：Version
方法名：getLinearPredecessor

Version.getLinearPredecessor介绍

[英]Assuming that this Version object was acquired through a Workspace``W and is within the VersionHistory``H, this method returns the predecessor of this version along the same line of descent as is returned by H.getAllLinearVersions() where H was also acquired through W.

Note that under simple versioning the behavior of this method is equivalent to getting the unique predecessor (if any) of this version.
[中]假设此Version对象是通过Workspace``W获取的，并且在VersionHistory``H范围内，此方法将沿着H.getAllLinearVersions()返回的相同下降线返回此版本的前一个对象，其中H也是通过[$7$]获取的。
请注意，在简单版本控制下，此方法的行为相当于获取此版本的唯一前置版本（如果有）。

代码示例

代码示例来源：origin: info.magnolia/magnolia-core

@Override
public Version getLinearPredecessor() throws RepositoryException {
  return version.getLinearPredecessor();
}

代码示例来源：origin: org.onehippo.cms7/hippo-repository-connector

public Version getLinearPredecessor() throws RepositoryException {
  return version.getLinearPredecessor();
}

代码示例来源：origin: net.adamcin.oakpal/oakpal-core

@Override
public Version getLinearPredecessor() throws RepositoryException {
  Version internalVersion = delegate.getLinearPredecessor();
  return new VersionFacade<>(internalVersion, session);
}

代码示例来源：origin: com.adobe.acs/acs-aem-commons-bundle

@Override
public boolean isAdded() {
  try {
    if (isResource()) {
      Node node = version.getLinearPredecessor().getFrozenNode().getNode(relativePath);
      return node == null;
    } else {
      Property prop = version.getLinearPredecessor().getFrozenNode().getProperty(relativePath);
      return prop == null;
    }
  } catch (Exception e) {
  }
  return true;
}

代码示例来源：origin: Adobe-Consulting-Services/acs-aem-commons

@Override
public boolean isAdded() {
  try {
    if (isResource()) {
      Node node = version.getLinearPredecessor().getFrozenNode().getNode(relativePath);
      return node == null;
    } else {
      Property prop = version.getLinearPredecessor().getFrozenNode().getProperty(relativePath);
      return prop == null;
    }
  } catch (Exception e) {
    // no-op
  }
  return true;
}

代码示例来源：origin: info.magnolia/magnolia-core

@Override
public Version getLinearPredecessor() throws RepositoryException {
  Version linearPredecessor = getWrappedVersion().getLinearPredecessor();
  return linearPredecessor != null ? wrapVersion(linearPredecessor) : null;
}

代码示例来源：origin: com.adobe.acs/acs-aem-commons-bundle

@Override
public boolean isChanged() {
  try {
    if (isResource()) {
      return false;
    }
    Property prop = version.getLinearPredecessor().getFrozenNode().getProperty(relativePath);
    String currentValue = config.printProperty(prop);
    String oldValue = config.printProperty(property);
    return !currentValue.equals(oldValue);
  } catch (Exception e) {
    log.error("Unable to check changed status", e);
  }
  return false;
}

代码示例来源：origin: Adobe-Consulting-Services/acs-aem-commons

@Override
public boolean isChanged() {
  try {
    if (isResource()) {
      return false;
    }
    Property prop = version.getLinearPredecessor().getFrozenNode().getProperty(relativePath);
    String currentValue = config.printProperty(prop);
    String oldValue = config.printProperty(property);
    return !currentValue.equals(oldValue);
  } catch (Exception e) {
    log.error("Unable to check changed status", e);
  }
  return false;
}

代码示例来源：origin: brix-cms/brix-cms

public JcrVersion execute() throws Exception {
    return JcrVersion.Wrapper.wrap(getDelegate().getLinearPredecessor(),
        getJcrSession());
  }
});

代码示例来源：origin: brix-cms/brix-cms

public Version getLinearPredecessor() throws RepositoryException {
  return VersionWrapper.wrap(getDelegate().getLinearPredecessor(), getSessionWrapper());
}

代码示例来源：origin: apache/jackrabbit

/** {@inheritDoc} */
public RemoteVersion getLinearPredecessor() throws RepositoryException,
    RemoteException {
  try {
    Version linearPredecessor = version.getLinearPredecessor();
    if (linearPredecessor == null) {
      return null;
    } else {
      return getFactory().getRemoteVersion(linearPredecessor);
    }
  } catch (RepositoryException ex) {
    throw getRepositoryException(ex);
  }
}

代码示例来源：origin: apache/jackrabbit

/**
 * @see VersionHistory#getAllLinearVersions()
 */
public VersionIterator getAllLinearVersions() throws RepositoryException {
  checkStatus();
  // TODO: improve and use lazy loading of versions as needed.
  // TODO: change session.getNodeByUUID to Session.getNodeByIdentifier as soon as implemented
  List<Version> versions = new ArrayList<Version>();
  Version rootV = getRootVersion();
  Node vn = session.getNodeByUUID(getVersionableUUID());
  Version v = vn.getBaseVersion();
  while (v != null && !rootV.isSame(v)) {
    versions.add(0, v);
    v = v.getLinearPredecessor();
  }
  versions.add(0, rootV);
  return new VersionIteratorAdapter(versions);
}

代码示例来源：origin: org.apache.jackrabbit/jackrabbit-jcr2spi

/**
 * @see VersionHistory#getAllLinearVersions()
 */
public VersionIterator getAllLinearVersions() throws RepositoryException {
  checkStatus();
  // TODO: improve and use lazy loading of versions as needed.
  // TODO: change session.getNodeByUUID to Session.getNodeByIdentifier as soon as implemented
  List<Version> versions = new ArrayList<Version>();
  Version rootV = getRootVersion();
  Node vn = session.getNodeByUUID(getVersionableUUID());
  Version v = vn.getBaseVersion();
  while (v != null && !rootV.isSame(v)) {
    versions.add(0, v);
    v = v.getLinearPredecessor();
  }
  versions.add(0, rootV);
  return new VersionIteratorAdapter(versions);
}

代码示例来源：origin: org.apache.jackrabbit/jackrabbit-jcr2spi

/**
 * @see Version#getLinearSuccessor()
 */
public Version getLinearSuccessor() throws RepositoryException {
  // TODO: improve.
  VersionHistory vh = getContainingHistory();
  for (VersionIterator it = vh.getAllLinearVersions(); it.hasNext();) {
    Version v = it.nextVersion();
    if (isSame(v.getLinearPredecessor())) {
      return v;
    }
  }
  // no linear successor found
  return null;
}

代码示例来源：origin: apache/jackrabbit

/**
 * @see Version#getLinearSuccessor()
 */
public Version getLinearSuccessor() throws RepositoryException {
  // TODO: improve.
  VersionHistory vh = getContainingHistory();
  for (VersionIterator it = vh.getAllLinearVersions(); it.hasNext();) {
    Version v = it.nextVersion();
    if (isSame(v.getLinearPredecessor())) {
      return v;
    }
  }
  // no linear successor found
  return null;
}

代码示例来源：origin: apache/jackrabbit

/**
 * Checks obtaining the linear predecessor.
 * @since JCR 2.0
 */
public void testGetLinearPredecessorSuccessor() throws RepositoryException {
  String path = versionableNode.getPath();
  VersionManager vm = versionableNode.getSession().getWorkspace().getVersionManager();
  // get the previous version
  Version pred = vm.getBaseVersion(path);
  // shouldn't have a predecessor
  assertNull(pred.getLinearPredecessor());
  // shouldn't have a successor yet
  assertNull(pred.getLinearSuccessor());
  // check root version
  Version root = vm.getVersionHistory(path).getRootVersion();
  assertNull(root.getLinearSuccessor());
  // create a new version
  vm.checkout(path);
  Version version = vm.checkin(path);
  // refresh the predecessor
  pred = (Version)versionableNode.getSession().getNode(pred.getPath());
  assertTrue("linear predecessor of new version should be previous version",
      version.getLinearPredecessor().isSame(pred));
  assertTrue("linear successor of previous version should be new version",
      pred.getLinearSuccessor().isSame(version));
}

代码示例来源：origin: info.magnolia/magnolia-core

@Test
public void testGetPreviousVersion() throws RepositoryException {
  // GIVEN
  Session session = MgnlContext.getJCRSession(RepositoryConstants.WEBSITE);
  Node node = session.getRootNode().addNode("pageTestGetPreviousVersion", NodeTypes.Content.NAME);
  node.addNode("paragraph", NodeTypes.Content.NAME);
  session.save();
  Version version1_0 = versionManager.addVersion(node);
  node.addNode("area", NodeTypes.Content.NAME);
  session.save();
  Version version1_1 = versionManager.addVersion(node);
  // WHEN
  Version previousVersion1_0 = VersionUtil.getPreviousVersion(version1_0);
  Version previousVersion1_1 = VersionUtil.getPreviousVersion(version1_1);
  // THEN
  assertTrue(version1_0.isSame(previousVersion1_1));
  assertEquals(version1_0.getLinearPredecessor().getIdentifier(), previousVersion1_0.getIdentifier());
}

代码示例来源：origin: info.magnolia/magnolia-core

@Test
public void testLinearPredecessorIsWrapped() throws Exception {
  // GIVEN
  Session session = MgnlContext.getJCRSession(RepositoryConstants.WEBSITE);
  VersionManager versionMan = Components.getComponent(VersionManager.class);
  Node node = session.getRootNode().addNode( "page", NodeTypes.Page.NAME);
  session.save();
  Version createdVersion_1 = versionMan.addVersion(node);
  Version createdVersion_2 = versionMan.addVersion(node);
  // WHEN
  Version version = createdVersion_2.getLinearPredecessor();
  // THEN
  assertTrue(version instanceof ContentDecoratorVersionWrapper);
  assertTrue(version.isSame(createdVersion_1));
}

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