Package org.craftercms.core.service.impl

Class ContentStoreServiceImpl

java.lang.Object

org.craftercms.core.service.impl.AbstractCachedContentStoreService

org.craftercms.core.service.impl.ContentStoreServiceImpl

All Implemented Interfaces:

ContentStoreService

public class ContentStoreServiceImpl
extends AbstractCachedContentStoreService

Default implementation of ContentStoreService. Extends from AbstractCachedContentStoreService to use caching.

Author:

Alfonso Vásquez

Field Summary

Fields

Modifier and Type	Field	Description
protected org.craftercms.commons.file.blob.BlobStoreResolver	blobStoreResolver
protected org.craftercms.commons.file.blob.BlobUrlResolver	blobUrlResolver
protected Map<String,Context>	contexts	Map of open Contexts
protected com.fasterxml.jackson.databind.ObjectMapper	mapper
protected DescriptorMerger	merger	Merges a bunch of descriptors
protected DescriptorMergeStrategyResolver	mergeStrategyResolver	Resolves the DescriptorMergeStrategy to use for a particular descriptor.
protected ItemProcessorResolver	processorResolver	Resolves the ItemProcessor to use for a particular Item.
protected boolean	sourceAttributeEnabled	Indicates if the source attribute should be added when merging XML documents
protected String	sourceAttributeName	The name of the attribute used to identify the source of an XML element
protected String	sourceTypeAttributeName	The name of the attribute used to identify the type of the source of an XML element
protected String	sourceTypeXPath	The XPath selector to extract the content-type from descriptors
protected ContentStoreAdapterRegistry	storeAdapterRegistry	Registry of ContentStoreAdapters.

Fields inherited from class org.craftercms.core.service.impl.AbstractCachedContentStoreService

cacheTemplate, CONST_KEY_ELEM_CHILDREN, CONST_KEY_ELEM_EXISTS, CONST_KEY_ELEM_ITEM, CONST_KEY_ELEM_TREE, defaultCachingOptions, flatteningProcessor

Fields inherited from interface org.craftercms.core.service.ContentStoreService

UNLIMITED_TREE_DEPTH

Constructor Summary

Constructors

Constructor

Description

ContentStoreServiceImpl(CacheTemplate cacheTemplate, ContentStoreAdapterRegistry storeAdapterRegistry, DescriptorMergeStrategyResolver mergeStrategyResolver, DescriptorMerger merger, ItemProcessorResolver processorResolver, org.craftercms.commons.file.blob.BlobUrlResolver blobUrlResolver, org.craftercms.commons.file.blob.BlobStoreResolver blobStoreResolver, String sourceAttributeName, String sourceTypeAttributeName, String sourceTypeXPath)

Method Summary

Modifier and Type	Method	Description
protected void	addSourceAttributes(org.dom4j.Document document, org.dom4j.Element element, String descriptorUrl)
protected String	createContextId(String tag, String storeType, String rootFolderPath, boolean cacheOn, int maxAllowedItemsInCache, boolean ignoreHiddenFiles)
boolean	destroyContext(Context context)	Destroys the specified context, login out of any remote repository (if a login was issued) and destroying the cache scope associated to the context.
boolean	doExists(Context context, CachingOptions cachingOptions, String url)
protected List<Item>	doFilter(List<Item> items, ItemFilter filter, boolean runningBeforeProcessing)	Filters the given list of items by using the specified filter.
protected List<Item>	doFindChildren(Context context, CachingOptions cachingOptions, String url, Integer depth, ItemFilter filter, ItemProcessor processor, boolean flatten)	Does the following: Retrieves the children from the underlying repository (without their descriptors). Filters the returned list if ItemFilter.runBeforeProcessing() returns true. Calls ContentStoreService.getTree(Context, String) or ContentStoreService.getItem(Context, String) for each item in the list (depending on whether the item is a folder or not, and if depth is not null), to obtain the merged and processed version of each item. Filters the processed list if ItemFilter.runAfterProcessing() returns true. Returns the final list of processed items.
protected List<Item>	doFindChildren(Context context, CachingOptions cachingOptions, String url, ItemFilter filter, ItemProcessor processor, boolean flatten)
protected Item	doFindItem(Context context, CachingOptions cachingOptions, String url, ItemProcessor processor)	Returns the content store item for the given url, returning null if not found.
protected Tree	doFindTree(Context context, CachingOptions cachingOptions, String url, int depth, ItemFilter filter, ItemProcessor processor, boolean flatten)
protected Item	doMerging(Context context, CachingOptions cachingOptions, Item item)	Executes merging for the specified Item: Gets the DescriptorMergeStrategy for the item's descriptor from the DescriptorMergeStrategyResolver. Gets the actual descriptors to merge from the returned merge strategy. Retrieves the descriptor documents from the underlying repository. Merges the descriptor documents. Returns the item with the merged descriptor document.
protected Item	doProcessing(Context context, CachingOptions cachingOptions, Item item, ItemProcessor additionalProcessor)	Executes processing for the specified Item: Gets the main ItemProcessor for the item from the ItemProcessorResolver. Calls the main processor's process method to process the item. If an additional processor was passed to this method, the additional processor is also called. Returns the processed item.
Content	findContent(Context context, CachingOptions cachingOptions, String url)	Returns the content of the file for the given url, returning null if not found.
protected List<Item>	getChildrenInternal(Context context, CachingOptions cachingOptions, String url, ItemProcessor processor, boolean flatten)	This method is meant to be overridden when the children need to be further processed/filtered
Content	getContent(Context context, CachingOptions cachingOptions, String url)	Returns the content of the file for the given url.
Context	getContext(String contextId)	Returns the open Context for the given ID, or null if no context found for the ID.
Context	getContext(String tag, String storeType, String rootFolderPath, boolean mergingOn, boolean cacheOn, int maxAllowedItemsInCache, boolean ignoreHiddenFiles)	Returns a context with the specified parameters, if the context doesn't exist it will be created.
void	setSourceAttributeEnabled(boolean sourceAttributeEnabled)
boolean	validate(Context context)	Returns true if the specified context is still valid and usable.

Methods inherited from class org.craftercms.core.service.impl.AbstractCachedContentStoreService

exists, exists, findChildren, findItem, findTree, getChildren, getItem, getProcessor, getTree, setDefaultCachingOptions, setFlatteningProcessor

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.craftercms.core.service.ContentStoreService

findChildren, findChildren, findContent, findItem, findItem, findTree, findTree, findTree, getChildren, getChildren, getContent, getItem, getItem, getTree, getTree, getTree

Field Details

storeAdapterRegistry

protected ContentStoreAdapterRegistry storeAdapterRegistry

Registry of ContentStoreAdapters.

mergeStrategyResolver

protected DescriptorMergeStrategyResolver mergeStrategyResolver

Resolves the DescriptorMergeStrategy to use for a particular descriptor.

merger

protected DescriptorMerger merger

Merges a bunch of descriptors

processorResolver

protected ItemProcessorResolver processorResolver

Resolves the ItemProcessor to use for a particular Item.

contexts

protected Map<String,Context> contexts

Map of open Contexts

blobUrlResolver

protected org.craftercms.commons.file.blob.BlobUrlResolver blobUrlResolver

blobStoreResolver

protected org.craftercms.commons.file.blob.BlobStoreResolver blobStoreResolver

mapper

protected com.fasterxml.jackson.databind.ObjectMapper mapper

sourceAttributeEnabled

protected boolean sourceAttributeEnabled

Indicates if the source attribute should be added when merging XML documents

sourceAttributeName

protected String sourceAttributeName

The name of the attribute used to identify the source of an XML element

sourceTypeAttributeName

protected String sourceTypeAttributeName

The name of the attribute used to identify the type of the source of an XML element

sourceTypeXPath

protected String sourceTypeXPath

The XPath selector to extract the content-type from descriptors

Constructor Details

ContentStoreServiceImpl

@ConstructorProperties({"cacheTemplate","storeAdapterRegistry","mergeStrategyResolver","merger","processorResolver","blobUrlResolver","blobStoreResolver","sourceAttributeName","sourceTypeAttributeName","sourceTypeXPath"})
public ContentStoreServiceImpl(CacheTemplate cacheTemplate,
 ContentStoreAdapterRegistry storeAdapterRegistry,
 DescriptorMergeStrategyResolver mergeStrategyResolver,
 DescriptorMerger merger,
 ItemProcessorResolver processorResolver,
 org.craftercms.commons.file.blob.BlobUrlResolver blobUrlResolver,
 org.craftercms.commons.file.blob.BlobStoreResolver blobStoreResolver,
 String sourceAttributeName,
 String sourceTypeAttributeName,
 String sourceTypeXPath)

Method Details

setSourceAttributeEnabled

public void setSourceAttributeEnabled(boolean sourceAttributeEnabled)

getContext

public Context getContext(String contextId)

Returns the open Context for the given ID, or null if no context found for the ID.

getContext

public Context getContext(String tag,
 String storeType,
 String rootFolderPath,
 boolean mergingOn,
 boolean cacheOn,
 int maxAllowedItemsInCache,
 boolean ignoreHiddenFiles)
                   throws InvalidStoreTypeException,
RootFolderNotFoundException,
StoreException,
AuthenticationException

Returns a context with the specified parameters, if the context doesn't exist it will be created.

Parameters:

tag - a tag that's used when creating the ID to differentiate this context

storeType - the type of content store to use

rootFolderPath - the root folder path for the context

mergingOn - indicates if content merging should be enabled

cacheOn - indicates if content caching should be enabled

maxAllowedItemsInCache - the maximum number of items to hold in the cache

ignoreHiddenFiles - indicates if hidden files should be ignored

Returns:

the Context object

Throws:

InvalidStoreTypeException - if the provided store type is invalid

RootFolderNotFoundException - if the provided root folder path doesn't exist

StoreException - if there is any unexpected error during the creation the context

AuthenticationException - if there is any authentication error during the creation of the context

validate

public boolean validate(Context context)
                 throws StoreException,
AuthenticationException

Description copied from interface: ContentStoreService

Returns true if the specified context is still valid and usable.

Throws:

StoreException

AuthenticationException

destroyContext

public boolean destroyContext(Context context)
                       throws InvalidContextException,
StoreException,
AuthenticationException

Destroys the specified context, login out of any remote repository (if a login was issued) and destroying the cache scope associated to the context.

Returns:

true if the context was successfully destroyed, false otherwise.

Throws:

InvalidContextException

StoreException

AuthenticationException

doExists

public boolean doExists(Context context,
 CachingOptions cachingOptions,
 String url)
                 throws InvalidContextException,
PathNotFoundException,
StoreException

Specified by:

doExists in class AbstractCachedContentStoreService

Throws:

InvalidContextException

PathNotFoundException

StoreException

findContent

public Content findContent(Context context,
 CachingOptions cachingOptions,
 String url)
                    throws InvalidContextException,
StoreException

Description copied from interface: ContentStoreService

Returns the content of the file for the given url, returning null if not found.

Parameters:

context - the context with the store configuration (required)

cachingOptions - the caching options for any caching operation done inside this service call (optional)

url - the url of the file (required)

Returns:

the file content

Throws:

InvalidContextException - if the context is invalid

StoreException - if an error occurred while accessing the content store

getContent

public Content getContent(Context context,
 CachingOptions cachingOptions,
 String url)
                   throws InvalidScopeException,
PathNotFoundException,
StoreException

Returns the content of the file for the given url.

Parameters:

context - the context with the store configuration (required)

cachingOptions - the caching options for any caching operation done inside this service call (optional)

url - the url of the file (required)

Returns:

the file content

Throws:

PathNotFoundException - if the file the url points to can't be found

StoreException - if an error occurred while accessing the content store

InvalidScopeException

doFindItem

protected Item doFindItem(Context context,
 CachingOptions cachingOptions,
 String url,
 ItemProcessor processor)
                   throws InvalidContextException,
XmlFileParseException,
XmlMergeException,
ItemProcessingException,
StoreException

Returns the content store item for the given url, returning null if not found.

After acquiring the item from the ContentStoreAdapter, the item's descriptor is merged (according to its DescriptorMergeStrategy) with related descriptors, and the final item is then processed.

Specified by:

doFindItem in class AbstractCachedContentStoreService

Throws:

InvalidContextException

XmlFileParseException

XmlMergeException

ItemProcessingException

StoreException

doFindChildren

protected List<Item> doFindChildren(Context context,
 CachingOptions cachingOptions,
 String url,
 ItemFilter filter,
 ItemProcessor processor,
 boolean flatten)
                             throws InvalidContextException,
XmlFileParseException,
XmlMergeException,
ItemProcessingException,
StoreException

Specified by:

doFindChildren in class AbstractCachedContentStoreService

Throws:

InvalidContextException

XmlFileParseException

XmlMergeException

ItemProcessingException

StoreException

doFindTree

protected Tree doFindTree(Context context,
 CachingOptions cachingOptions,
 String url,
 int depth,
 ItemFilter filter,
 ItemProcessor processor,
 boolean flatten)
                   throws InvalidContextException,
XmlFileParseException,
XmlMergeException,
ItemProcessingException,
StoreException

Specified by:

doFindTree in class AbstractCachedContentStoreService

Throws:

InvalidContextException

XmlFileParseException

XmlMergeException

ItemProcessingException

StoreException

doFindChildren

protected List<Item> doFindChildren(Context context,
 CachingOptions cachingOptions,
 String url,
 Integer depth,
 ItemFilter filter,
 ItemProcessor processor,
 boolean flatten)
                             throws InvalidContextException,
XmlFileParseException,
XmlMergeException,
ItemProcessingException,
StoreException

Does the following:

1. Retrieves the children from the underlying repository (without their descriptors).
2. Filters the returned list if ItemFilter.runBeforeProcessing() returns true.
3. Calls ContentStoreService.getTree(Context, String) or ContentStoreService.getItem(Context, String) for each item in the list (depending on whether the item is a folder or not, and if depth is not null), to obtain the merged and processed version of each item.
4. Filters the processed list if ItemFilter.runAfterProcessing() returns true.
5. Returns the final list of processed items.

Throws:

InvalidContextException

XmlFileParseException

XmlMergeException

ItemProcessingException

StoreException

getChildrenInternal

protected List<Item> getChildrenInternal(Context context,
 CachingOptions cachingOptions,
 String url,
 ItemProcessor processor,
 boolean flatten)

This method is meant to be overridden when the children need to be further processed/filtered

Parameters:

context - the context

cachingOptions - the caching options

url - the url

processor - the processor

flatten - whether to flatten the children

Returns:

the children

doMerging

protected Item doMerging(Context context,
 CachingOptions cachingOptions,
 Item item)
                  throws CrafterException

Executes merging for the specified Item:

1. Gets the DescriptorMergeStrategy for the item's descriptor from the DescriptorMergeStrategyResolver.
2. Gets the actual descriptors to merge from the returned merge strategy.
3. Retrieves the descriptor documents from the underlying repository.
4. Merges the descriptor documents.
5. Returns the item with the merged descriptor document.

Throws:

CrafterException

addSourceAttributes

protected void addSourceAttributes(org.dom4j.Document document,
 org.dom4j.Element element,
 String descriptorUrl)

doProcessing

protected Item doProcessing(Context context,
 CachingOptions cachingOptions,
 Item item,
 ItemProcessor additionalProcessor)
                     throws ItemProcessingException

Executes processing for the specified Item:

1. Gets the main ItemProcessor for the item from the ItemProcessorResolver.
2. Calls the main processor's process method to process the item.
3. If an additional processor was passed to this method, the additional processor is also called.
4. Returns the processed item.

Throws:

ItemProcessingException

doFilter

protected List<Item> doFilter(List<Item> items,
 ItemFilter filter,
 boolean runningBeforeProcessing)

Filters the given list of items by using the specified filter. The runningBeforeProcessing flag is passed to indicated the filter in which phase it is being executed (after or before processing).

createContextId

protected String createContextId(String tag,
 String storeType,
 String rootFolderPath,
 boolean cacheOn,
 int maxAllowedItemsInCache,
 boolean ignoreHiddenFiles)