info.magnolia.cms.core
Class DefaultContent

java.lang.Object
  info.magnolia.cms.core.ContentHandler
      info.magnolia.cms.core.AbstractContent
          info.magnolia.cms.core.DefaultContent

All Implemented Interfaces:

Content, Cloneable

Direct Known Subclasses:

ContentVersion

public class DefaultContent
extends AbstractContent

Default, JCR-based, implementation of Content.

Version:

$Revision:2719 $ ($Author:scharles $)

Author:

Sameer Charles

Nested Class Summary

Nested classes/interfaces inherited from interface info.magnolia.cms.core.Content

Content.ContentFilter

Field Summary

protected javax.jcr.Node

node Wrapped jcr node.

Fields inherited from class info.magnolia.cms.core.ContentHandler

hierarchyManager

Constructor Summary

protected	DefaultContent() Empty constructor.
	DefaultContent(javax.jcr.Item elem, HierarchyManager hierarchyManager) Constructor to get existing node.

Method Summary

void	addMixin(String type) add specified mixin type if allowed.
javax.jcr.version.Version	addVersion() add version leaving the node checked out.
javax.jcr.version.Version	addVersion(Rule rule) add version leaving the node checked out.
Content	createContent(String name, String contentType) Creates a Content node under the current node with the specified name.
void	delete() Remove this path.
protected int	determineNodeDataType(String name)
javax.jcr.version.VersionIterator	getAllVersions()
Content	getAncestor(int level) get absolute parent object starting from the root node.
Collection<Content>	getAncestors() Convenience method for taglib.
ContentVersion	getBaseVersion() get the current base version of this node.
Collection<Content>	getChildren(Content.ContentFilter filter, String namePattern, Comparator<Content> orderCriteria)
Content	getContent(String name) Gets the Content node of the current node with the specified name.
String	getHandle() get a handle representing path relative to the content repository.
int	getIndex() This method returns the index of this node within the ordered set of its same-name sibling nodes.
ItemType	getItemType() Get the magnolia ItemType.
javax.jcr.Node	getJCRNode() utility method to get Node object used to create current content object.
int	getLevel() get node level from the ROOT node.
javax.jcr.lock.Lock	getLock() Returns the Lock object that applies to this node.
MetaData	getMetaData() Returns the meta data of the current node.
javax.jcr.nodetype.NodeType[]	getMixinNodeTypes() Returns an array of NodeType objects representing the mixin node types assigned to this node.
String	getName() get node name.
Collection<NodeData>	getNodeDataCollection(String namePattern) Gets all node datas matching the given pattern.
javax.jcr.nodetype.NodeType	getNodeType() returns primary node type definition of the associated Node of this object.
String	getNodeTypeName() returns primary node type name of the associated Node of this object.
Content	getParent() get parent content object.
protected Collection<NodeData>	getPrimitiveNodeDatas(String namePattern)
String	getUUID() UUID of the node referenced by this object.
ContentVersion	getVersionedContent(String versionName) get content view over the jcr version object.
ContentVersion	getVersionedContent(javax.jcr.version.Version version) get content view over the jcr version object.
javax.jcr.version.VersionHistory	getVersionHistory()
boolean	hasContent(String name)
boolean	hasMetaData() checks if this node has a sub node with name MetaData.
boolean	hasMixin(String mixinName) Checks whether or not given mixin is assigned to a type.
boolean	hasNodeData(String name) Delegates to NodeData.isExist().
boolean	holdsLock() Returns true if this node holds a lock; otherwise returns false.
protected boolean	isCheckedOut() Returns true if this node is either versionable and currently checked-out, non-versionable and its nearest versionable ancestor is checked-out or non-versionable and it has no versionable ancestor.
boolean	isLocked() Returns true if this node is locked either as a result of a lock held by this node or by a deep lock on a node above this node; otherwise returns false.
boolean	isModified() Returns true if this Item has been saved but has subsequently been modified through the current session and therefore the state of this item as recorded in the session differs from the state of this item as saved.
protected boolean	isNodeType(javax.jcr.Node node, String type) private Helper method to evaluate primary node type of the given node.
boolean	isNodeType(String type) evaluate primary node type of the associated Node of this object.
javax.jcr.lock.Lock	lock(boolean isDeep, boolean isSessionScoped) places a lock on this object.
javax.jcr.lock.Lock	lock(boolean isDeep, boolean isSessionScoped, long yieldFor) places a lock on this object.
NodeData	newNodeDataInstance(String name, int type, boolean createIfNotExisting) As defined in Content.getNodeData(String) this method always returns a node data object.
void	orderBefore(String srcName, String beforeName) move current node to the specified location above the named beforename.
void	refresh(boolean keepChanges) If keepChanges is false, this method discards all pending changes recorded in this session.
void	removeMixin(String type) Removes the specified mixin node type from this node.
void	removeVersionHistory() removes all versions of this node and associated version graph.
void	restore(String versionName, boolean removeExisting) Restores this node to the state defined by the version with the specified versionName.
void	restore(javax.jcr.version.Version version, boolean removeExisting) Restores this node to the state defined by the specified version.
void	restore(javax.jcr.version.Version version, String relPath, boolean removeExisting) Restores the specified version to relPath, relative to this node.
void	restoreByLabel(String versionLabel, boolean removeExisting) Restores this node to the state recorded in the version specified by versionLabel.
void	save() Persists all changes to the repository if validation succeeds.
protected void	setNode(javax.jcr.Node node)
protected void	setPath(String path)
protected void	setRootNode(javax.jcr.Node node)
void	unlock() Removes the lock on this node.

Methods inherited from class info.magnolia.cms.core.AbstractContent

createContent, createContent, createNodeData, createNodeData, createNodeData, createNodeData, createNodeData, delete, deleteNodeData, getBinaryNodeDatas, getChildByName, getChildren, getChildren, getChildren, getChildren, getChildren, getChildren, getNodeData, getNodeDataCollection, getTemplate, getTitle, getWorkspace, hasChildren, hasChildren, isGranted, isNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, setNodeData, toString, updateMetaData

Methods inherited from class info.magnolia.cms.core.ContentHandler

clone, getAccessManager, getHierarchyManager, setAccessManager, setHierarchyManager

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface info.magnolia.cms.core.Content

getAccessManager, getHierarchyManager

Field Detail

node

protected javax.jcr.Node node

Wrapped jcr node.

Constructor Detail

DefaultContent

protected DefaultContent()

Empty constructor. Should NEVER be used for standard use, test only.

DefaultContent

public DefaultContent(javax.jcr.Item elem,
                      HierarchyManager hierarchyManager)
               throws javax.jcr.RepositoryException,
                      AccessDeniedException

Constructor to get existing node.

Parameters:

elem - initialized node object

hierarchyManager - HierarchyManager instance

Throws:

AccessDeniedException - if the current session does not have sufficient access rights to complete the operation

javax.jcr.RepositoryException - if an error occurs

Method Detail

setNode

protected void setNode(javax.jcr.Node node)

Parameters:

node -

setRootNode

protected void setRootNode(javax.jcr.Node node)

Parameters:

node -

setPath

protected void setPath(String path)

Parameters:

path -

getContent

public Content getContent(String name)
                   throws javax.jcr.PathNotFoundException,
                          javax.jcr.RepositoryException,
                          AccessDeniedException

Description copied from interface: Content

Gets the Content node of the current node with the specified name.

Parameters:

name - of the node acting as Content

Returns:

Content

Throws:

javax.jcr.PathNotFoundException

javax.jcr.RepositoryException - if an error occurs

AccessDeniedException - if the current session does not have sufficient access rights to complete the operation

createContent

public Content createContent(String name,
                             String contentType)
                      throws javax.jcr.PathNotFoundException,
                             javax.jcr.RepositoryException,
                             AccessDeniedException

Description copied from interface: Content

Creates a Content node under the current node with the specified name.

Parameters:

name - of the node to be created as Content

contentType - JCR node type as configured

Returns:

newly created Content

Throws:

javax.jcr.PathNotFoundException

javax.jcr.RepositoryException - if an error occurs

AccessDeniedException - if the current session does not have sufficient access rights to complete the operation

hasNodeData

public boolean hasNodeData(String name)
                    throws javax.jcr.RepositoryException

Description copied from class: AbstractContent

Delegates to NodeData.isExist().

Specified by:

hasNodeData in interface Content

Overrides:

hasNodeData in class AbstractContent

Throws:

javax.jcr.RepositoryException - if an error occurs

newNodeDataInstance

public NodeData newNodeDataInstance(String name,
                                    int type,
                                    boolean createIfNotExisting)
                             throws AccessDeniedException,
                                    javax.jcr.RepositoryException

Description copied from class: AbstractContent

As defined in Content.getNodeData(String) this method always returns a node data object. If the type is PropertyType.UNDEFINED the implementation should check if the node data exists and determine the type to use.

Specified by:

newNodeDataInstance in class AbstractContent

createIfNotExisting - if false an empty non-mutable node data will be returned if the node data doesn't exist otherwise a mutable nodedata object is returned (depending on the type)

Throws:

AccessDeniedException

javax.jcr.RepositoryException

determineNodeDataType

protected int determineNodeDataType(String name)

getMetaData

public MetaData getMetaData()

Description copied from interface: Content

Returns the meta data of the current node.

Returns:

MetaData meta information of the content Node

getName

public String getName()

Description copied from interface: Content

get node name.

Returns:

String name of the current Node

getChildren

public Collection<Content> getChildren(Content.ContentFilter filter,
                                       String namePattern,
                                       Comparator<Content> orderCriteria)

Specified by:

getChildren in class AbstractContent

namePattern - ignored if null.

getNodeDataCollection

public Collection<NodeData> getNodeDataCollection(String namePattern)

Description copied from interface: Content

Gets all node datas matching the given pattern. If no pattern is given (null), gets all node datas.

getPrimitiveNodeDatas

protected Collection<NodeData> getPrimitiveNodeDatas(String namePattern)
                                              throws javax.jcr.RepositoryException

Throws:

javax.jcr.RepositoryException

hasContent

public boolean hasContent(String name)
                   throws javax.jcr.RepositoryException

Throws:

javax.jcr.RepositoryException - if an error occurs

getHandle

public String getHandle()

Description copied from interface: Content

get a handle representing path relative to the content repository.

Returns:

String representing path (handle) of the content

getParent

public Content getParent()
                  throws javax.jcr.PathNotFoundException,
                         javax.jcr.RepositoryException,
                         AccessDeniedException

Description copied from interface: Content

get parent content object.

Returns:

Content representing parent node

Throws:

javax.jcr.PathNotFoundException

AccessDeniedException - if the current session does not have sufficient access rights to complete the operation

javax.jcr.RepositoryException - if an error occurs

getAncestor

public Content getAncestor(int level)
                    throws javax.jcr.PathNotFoundException,
                           javax.jcr.RepositoryException,
                           AccessDeniedException

Description copied from interface: Content

get absolute parent object starting from the root node.

Parameters:

level - level at which the requested node exist, relative to the ROOT node

Returns:

Content representing parent node

Throws:

AccessDeniedException - if the current session does not have sufficient access rights to complete the operation

javax.jcr.RepositoryException - if an error occurs

javax.jcr.PathNotFoundException

getAncestors

public Collection<Content> getAncestors()
                                 throws javax.jcr.PathNotFoundException,
                                        javax.jcr.RepositoryException

Description copied from interface: Content

Convenience method for taglib.

Returns:

Content representing node on level 0

Throws:

javax.jcr.RepositoryException - if an error occurs

javax.jcr.PathNotFoundException

getLevel

public int getLevel()
             throws javax.jcr.PathNotFoundException,
                    javax.jcr.RepositoryException

Description copied from interface: Content

get node level from the ROOT node.

Returns:

level at which current node exist, relative to the ROOT node

Throws:

javax.jcr.PathNotFoundException

javax.jcr.RepositoryException - if an error occurs

orderBefore

public void orderBefore(String srcName,
                        String beforeName)
                 throws javax.jcr.RepositoryException

Description copied from interface: Content

move current node to the specified location above the named beforename.

Parameters:

srcName - where current node has to be moved

beforeName - name of the node before the current node has to be placed

Throws:

javax.jcr.RepositoryException - if an error occurs

getIndex

public int getIndex()
             throws javax.jcr.RepositoryException

Description copied from interface: Content

This method returns the index of this node within the ordered set of its same-name sibling nodes. This index is the one used to address same-name siblings using the square-bracket notation, e.g., /a[3]/b[4]. Note that the index always starts at 1 (not 0), for compatibility with XPath. As a result, for nodes that do not have same-name-siblings, this method will always return 1.

Returns:

The index of this node within the ordered set of its same-name sibling nodes.

Throws:

javax.jcr.RepositoryException - if an error occurs

getJCRNode

public javax.jcr.Node getJCRNode()

Description copied from interface: Content

utility method to get Node object used to create current content object.

Returns:

Node

isNodeType

public boolean isNodeType(String type)

Description copied from interface: Content

evaluate primary node type of the associated Node of this object.

isNodeType

protected boolean isNodeType(javax.jcr.Node node,
                             String type)

private Helper method to evaluate primary node type of the given node.

Parameters:

node -

type -

getNodeType

public javax.jcr.nodetype.NodeType getNodeType()
                                        throws javax.jcr.RepositoryException

Description copied from interface: Content

returns primary node type definition of the associated Node of this object.

Throws:

javax.jcr.RepositoryException - if an error occurs

getNodeTypeName

public String getNodeTypeName()
                       throws javax.jcr.RepositoryException

Description copied from interface: Content

returns primary node type name of the associated Node of this object.

Throws:

javax.jcr.RepositoryException - if an error occurs

getItemType

public ItemType getItemType()
                     throws javax.jcr.RepositoryException

Description copied from interface: Content

Get the magnolia ItemType.

Returns:

the type

Throws:

javax.jcr.RepositoryException

restore

public void restore(String versionName,
                    boolean removeExisting)
             throws javax.jcr.version.VersionException,
                    javax.jcr.UnsupportedRepositoryOperationException,
                    javax.jcr.RepositoryException

Description copied from interface: Content

Restores this node to the state defined by the version with the specified versionName.

Throws:

javax.jcr.version.VersionException - if the specified versionName does not exist in this node's version history

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

restore

public void restore(javax.jcr.version.Version version,
                    boolean removeExisting)
             throws javax.jcr.version.VersionException,
                    javax.jcr.UnsupportedRepositoryOperationException,
                    javax.jcr.RepositoryException

Description copied from interface: Content

Restores this node to the state defined by the specified version.

Throws:

javax.jcr.version.VersionException - if the specified version is not part of this node's version history

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

restore

public void restore(javax.jcr.version.Version version,
                    String relPath,
                    boolean removeExisting)
             throws javax.jcr.version.VersionException,
                    javax.jcr.UnsupportedRepositoryOperationException,
                    javax.jcr.RepositoryException

Description copied from interface: Content

Restores the specified version to relPath, relative to this node.

Throws:

javax.jcr.version.VersionException - if the specified version is not part of this node's version history

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

restoreByLabel

public void restoreByLabel(String versionLabel,
                           boolean removeExisting)
                    throws javax.jcr.version.VersionException,
                           javax.jcr.UnsupportedRepositoryOperationException,
                           javax.jcr.RepositoryException

Description copied from interface: Content

Restores this node to the state recorded in the version specified by versionLabel.

Throws:

javax.jcr.version.VersionException - if the specified versionLabel does not exist in this node's version history

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

addVersion

public javax.jcr.version.Version addVersion()
                                     throws javax.jcr.UnsupportedRepositoryOperationException,
                                            javax.jcr.RepositoryException

Description copied from interface: Content

add version leaving the node checked out.

Throws:

javax.jcr.UnsupportedRepositoryOperationException

javax.jcr.RepositoryException - if an error occurs

addVersion

public javax.jcr.version.Version addVersion(Rule rule)
                                     throws javax.jcr.UnsupportedRepositoryOperationException,
                                            javax.jcr.RepositoryException

Description copied from interface: Content

add version leaving the node checked out.

Parameters:

rule - to be used to collect content

Throws:

javax.jcr.UnsupportedRepositoryOperationException

javax.jcr.RepositoryException - if an error occurs

See Also:

Rule

isCheckedOut

protected boolean isCheckedOut()
                        throws javax.jcr.RepositoryException

Returns true if this node is either

• versionable and currently checked-out,
• non-versionable and its nearest versionable ancestor is checked-out or
• non-versionable and it has no versionable ancestor.

Returns false if this node is either

• versionable and currently checked-in or
• non-versionable and its nearest versionable ancestor is checked-in.

Returns:

true if the node is checked out

Throws:

javax.jcr.RepositoryException

isModified

public boolean isModified()

Description copied from interface: Content

Returns true if this Item has been saved but has subsequently been modified through the current session and therefore the state of this item as recorded in the session differs from the state of this item as saved. Within a transaction, isModified on an Item may return false (because the Item has been saved since the modification) even if the modification in question is not in persistent storage (because the transaction has not yet been committed).

Note that in level 1 (that is, read-only) implementations, this method will always return false.

Returns:

true if this item is modified; false otherwise.

getVersionHistory

public javax.jcr.version.VersionHistory getVersionHistory()
                                                   throws javax.jcr.UnsupportedRepositoryOperationException,
                                                          javax.jcr.RepositoryException

Returns:

version history

Throws:

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

getAllVersions

public javax.jcr.version.VersionIterator getAllVersions()
                                                 throws javax.jcr.UnsupportedRepositoryOperationException,
                                                        javax.jcr.RepositoryException

Returns:

Version iterator retreived from version history

Throws:

javax.jcr.RepositoryException - if an error occurs

javax.jcr.UnsupportedRepositoryOperationException

getBaseVersion

public ContentVersion getBaseVersion()
                              throws javax.jcr.UnsupportedRepositoryOperationException,
                                     javax.jcr.RepositoryException

Description copied from interface: Content

get the current base version of this node.

Returns:

base ContentVersion

Throws:

javax.jcr.UnsupportedRepositoryOperationException

javax.jcr.RepositoryException

getVersionedContent

public ContentVersion getVersionedContent(javax.jcr.version.Version version)
                                   throws javax.jcr.RepositoryException

Description copied from interface: Content

get content view over the jcr version object.

Returns:

version object wrapped in ContentVersion

Throws:

javax.jcr.RepositoryException

See Also:

ContentVersion

getVersionedContent

public ContentVersion getVersionedContent(String versionName)
                                   throws javax.jcr.RepositoryException

Description copied from interface: Content

get content view over the jcr version object.

Returns:

version object wrapped in ContentVersion

Throws:

javax.jcr.RepositoryException

See Also:

ContentVersion

removeVersionHistory

public void removeVersionHistory()
                          throws AccessDeniedException,
                                 javax.jcr.RepositoryException

Description copied from interface: Content

removes all versions of this node and associated version graph.

Throws:

AccessDeniedException - If not allowed to do write operations on this node

javax.jcr.RepositoryException - if unable to remove versions from version store

save

public void save()
          throws javax.jcr.RepositoryException

Description copied from interface: Content

Persists all changes to the repository if validation succeeds.

Throws:

javax.jcr.RepositoryException - if an error occurs

delete

public void delete()
            throws javax.jcr.RepositoryException

Description copied from interface: Content

Remove this path.

Throws:

javax.jcr.RepositoryException - if an error occurs

refresh

public void refresh(boolean keepChanges)
             throws javax.jcr.RepositoryException

Description copied from interface: Content

If keepChanges is false, this method discards all pending changes recorded in this session.

Throws:

javax.jcr.RepositoryException - if an error occurs

See Also:

Item.refresh(boolean)

getUUID

public String getUUID()

Description copied from interface: Content

UUID of the node referenced by this object.

Returns:

uuid

addMixin

public void addMixin(String type)
              throws javax.jcr.RepositoryException

Description copied from interface: Content

add specified mixin type if allowed.

Parameters:

type - mixin type to be added

Throws:

javax.jcr.RepositoryException - if an error occurs

removeMixin

public void removeMixin(String type)
                 throws javax.jcr.RepositoryException

Description copied from interface: Content

Removes the specified mixin node type from this node. Also removes mixinName from this node's jcr:mixinTypes property. The mixin node type removal takes effect on save.

Parameters:

type - , mixin type to be removed

Throws:

javax.jcr.RepositoryException - if an error occurs

getMixinNodeTypes

public javax.jcr.nodetype.NodeType[] getMixinNodeTypes()
                                                throws javax.jcr.RepositoryException

Description copied from interface: Content

Returns an array of NodeType objects representing the mixin node types assigned to this node. This includes only those mixin types explicitly assigned to this node, and therefore listed in the property jcr:mixinTypes. It does not include mixin types inherited through the addition of supertypes to the primary type hierarchy.

Returns:

an array of mixin NodeType objects.

Throws:

javax.jcr.RepositoryException - if an error occurs

lock

public javax.jcr.lock.Lock lock(boolean isDeep,
                                boolean isSessionScoped)
                         throws javax.jcr.lock.LockException,
                                javax.jcr.RepositoryException

Description copied from interface: Content

places a lock on this object.

Parameters:

isDeep - if true this lock will apply to this node and all its descendants; if false, it applies only to this node.

isSessionScoped - if true, this lock expires with the current session; if false it expires when explicitly or automatically unlocked for some other reason.

Returns:

A Lock object containing a lock token.

Throws:

javax.jcr.lock.LockException - if this node is already locked or isDeep is true and a descendant node of this node already holds a lock.

javax.jcr.RepositoryException - if an error occurs

See Also:

Node.lock(boolean,boolean)

lock

public javax.jcr.lock.Lock lock(boolean isDeep,
                                boolean isSessionScoped,
                                long yieldFor)
                         throws javax.jcr.lock.LockException,
                                javax.jcr.RepositoryException

Description copied from interface: Content

places a lock on this object.

Parameters:

isDeep - if true this lock will apply to this node and all its descendants; if false, it applies only to this node.

isSessionScoped - if true, this lock expires with the current session; if false it expires when explicitly or automatically unlocked for some other reason.

yieldFor - number of milliseconds for which this method will try to get a lock

Returns:

A Lock object containing a lock token.

Throws:

javax.jcr.lock.LockException - if this node is already locked or isDeep is true and a descendant node of this node already holds a lock.

javax.jcr.RepositoryException - if an error occurs

See Also:

Node.lock(boolean,boolean)

getLock

public javax.jcr.lock.Lock getLock()
                            throws javax.jcr.lock.LockException,
                                   javax.jcr.RepositoryException

Description copied from interface: Content

Returns the Lock object that applies to this node. This may be either a lock on this node itself or a deep lock on a node above this node.

Throws:

javax.jcr.lock.LockException - If no lock applies to this node, a LockException is thrown.

javax.jcr.RepositoryException - if an error occurs

unlock

public void unlock()
            throws javax.jcr.lock.LockException,
                   javax.jcr.RepositoryException

Description copied from interface: Content

Removes the lock on this node. Also removes the properties jcr:lockOwner and jcr:lockIsDeep from this node. These changes are persisted automatically; there is no need to call save.

Throws:

javax.jcr.lock.LockException - if either does not currently hold a lock, or holds a lock for which this Session does not have the correct lock token

javax.jcr.RepositoryException - if an error occurs

holdsLock

public boolean holdsLock()
                  throws javax.jcr.RepositoryException

Description copied from interface: Content

Returns true if this node holds a lock; otherwise returns false. To hold a lock means that this node has actually had a lock placed on it specifically, as opposed to just having a lock apply to it due to a deep lock held by a node above.

Returns:

a boolean

Throws:

javax.jcr.RepositoryException - if an error occurs

isLocked

public boolean isLocked()
                 throws javax.jcr.RepositoryException

Description copied from interface: Content

Returns true if this node is locked either as a result of a lock held by this node or by a deep lock on a node above this node; otherwise returns false.

Returns:

a boolean

Throws:

javax.jcr.RepositoryException - if an error occurs

hasMetaData

public boolean hasMetaData()

Description copied from interface: Content

checks if this node has a sub node with name MetaData.

Returns:

true if MetaData exists

hasMixin

public boolean hasMixin(String mixinName)
                 throws javax.jcr.RepositoryException

Description copied from interface: Content

Checks whether or not given mixin is assigned to a type.

Throws:

javax.jcr.RepositoryException