com.ibm.workplace.wcm.api.query
Interface QueryService

public interface QueryService

The QueryService provides the ability to retrieve WCM Document by Query.

Here is an example of how to retrieve and use the QueryService to find the first content directly under the SiteArea parentSiteArea that has an element called "myElement":

  Content contentWithMyElement;
  QueryService queryService = workspace.getQueryService();
  Query query = queryService.createQuery(Content.class);
  query.addParentId(parentSiteArea.getId(), QueryDepth.CHILDREN);
  try
  {
     ResultIterator resultIterator = queryService.execute(query);
     if (resultIterator.hasNext())
     {
        Content childContent = (Content) resultIterator.next();
        if (childContent.hasComponent("myElement"))
        {
           contentWithMyElement = childContent;
        }
     }
  }
  catch (QueryServiceException e)
  {
     // Handle exception
  } 
 

Since:

7.0

Nested Class Summary

static class

QueryService.FilterOperation The logical operation used to filter when filtering with multiple users.

Method Summary

long	count(Query query) Count the query result without retrieving the actual data.
long	count(Query query, QueryScope p_scope) Count the query result without retrieving the actual data, within the give QueryScope.
AccessFilter	createAccessFilter(Access access, QueryService.FilterOperation operation, java.lang.String... members) Create an access filter.
QueryScope	createProjectScope(Identity<Project> p_project) Create a query scope, that scopes to a project.
Query	createQuery() Create a empty query.
Query	createQuery(java.lang.Class<? extends Item> apiType) Create a query for a given WCM API type.
Query	createQuery(java.lang.Class<? extends Item> apiType, Query parentQuery, QueryDepth depth) Create a query for a given type and parent.
ResultIterator	execute(Query query) Execute a Query.
PageIterator	execute(Query query, int resultsPerPage, int firstPage) Execute a Query with paging parameter.
ResultIterator	execute(Query p_query, QueryScope p_scope) Execute a Query using the given QueryScope.
PageIterator	execute(Query query, QueryScope p_scope, int resultsPerPage, int firstPage) Execute a Query using paging parameter, within the given QueryScope.

Method Detail

createQuery

Query createQuery()

Create a empty query.

Returns:

An empty Query

createQuery

Query createQuery(java.lang.Class<? extends Item> apiType)

Create a query for a given WCM API type. Note: To get the API type from a DocumentType, use DocumentType#getAPIType()

Parameters:

apiType - the WCM API type of item to find

Returns:

Query for the given type

createQuery

Query createQuery(java.lang.Class<? extends Item> apiType,
                  Query parentQuery,
                  QueryDepth depth)

Create a query for a given type and parent.

Note 1: To get the API type from a DocumentType, use DocumentType#getAPIType()

Note 2: Children will only be returned from PUBLISHED parents. If your parentQuery needs to be Project-Aware, then first execute it under a Project QueryScope then set the returned Parent Ids on the Query via the Query.setParentIds / Query.addParentId methods

Parameters:

apiType - the WCM API type of item to find

parentQuery - a query for the parent items

depth - return all descendants or just children

Returns:

Query

createProjectScope

QueryScope createProjectScope(Identity<Project> p_project)

Create a query scope, that scopes to a project.

Parameters:

p_project - the identity of the project to scope to

Returns:

the query scope

createAccessFilter

AccessFilter createAccessFilter(Access access,
                                QueryService.FilterOperation operation,
                                java.lang.String... members)

Create an access filter. An AccessFilter object can be applied to a query. The results of the query will only contain items where all of members have the specified access

Parameters:

access - the access to filter with

operation - the logical operation to perform when multiple users are specified

members - the members used to filter

Returns:

the access filter.

See Also:

Query.setAccessFilter(AccessFilter)

execute

ResultIterator execute(Query query)
                       throws QueryServiceException

Execute a Query.

Parameters:

query - the query will be executed

Returns:

query result

Throws:

QueryServiceException

execute

ResultIterator execute(Query p_query,
                       QueryScope p_scope)
                       throws QueryServiceException

Execute a Query using the given QueryScope. If the QueryScope in null the query will be executed with no scope.

Parameters:

p_query - the query will be executed

p_scope - the scope the query is executed in

Returns:

query result

Throws:

QueryServiceException

execute

PageIterator execute(Query query,
                     int resultsPerPage,
                     int firstPage)
                     throws QueryServiceException,
                            java.lang.IllegalArgumentException

Execute a Query with paging parameter.

Parameters:

query - the query will be executed

resultsPerPage - how many results per page

firstPage - the first page of the return result

Returns:

query result

Throws:

QueryServiceException

java.lang.IllegalArgumentException

execute

PageIterator execute(Query query,
                     QueryScope p_scope,
                     int resultsPerPage,
                     int firstPage)
                     throws QueryServiceException,
                            java.lang.IllegalArgumentException

Execute a Query using paging parameter, within the given QueryScope. If the QueryScope in null the query will be executed with no scope.

Parameters:

query - the query will be executed

p_scope - the query scope

resultsPerPage - how many results per page

firstPage - the first page of the return result

Returns:

query result

Throws:

QueryServiceException

java.lang.IllegalArgumentException

count

long count(Query query)
           throws QueryServiceException

Count the query result without retrieving the actual data.

Parameters:

query - the query will be executed

Returns:

count for the query result

Throws:

QueryServiceException

count

long count(Query query,
           QueryScope p_scope)
           throws QueryServiceException

Count the query result without retrieving the actual data, within the give QueryScope. If the QueryScope in null the query will be executed with no scope.

Parameters:

query - the query will be executed

p_scope - the query scope

Returns:

count for the query result

Throws:

QueryServiceException