/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
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* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership . The ASF licenses this file to you under the Apache
* License , Version 2 . 0 ( the " License " ) ; you may not use this file
* except in compliance with the License . You may obtain a copy of
* the License at http : //www.apache.org/licenses/LICENSE-2.0 .
*/
module com { module sun { module star { module ucb {
/** provides access to the children of a folder content.
< p > It can be understand as a table containing a row for each child . The
table columns may contain values of properties of the children .
*/
published service ContentResultSet
{
/** must be implemented to make it possible to resolve cyclic object
references ( i . e . between an implementation of
com : : sun : : star : : beans : : XPropertySet
- which may hold property change listeners - and
com : : sun : : star : : beans : : XPropertyChangeListener
- which may hold the property set ) .
< p > This interface is required .
*/
interface com::sun::star::lang::XComponent;
/** provides access to the result set meta data. Meta data are for
example the number of columns of the result set , information
on the data types of columns , column names , and more .
< p > This interface is required .
*/
interface com::sun::star::sdbc::XResultSetMetaDataSupplier;
/** enables traveling through the result set members ( the contents ).
This interface mainly provides a cursor for the result set .
< p > Note that every method of this interface implementation additionally
may throw a ResultSetException ( which is derived from
com : : sun : : star : : sdbc : : SQLException to be compatible
to that interface ) . The new exception transports another exception ,
which indicates the reason for the failure of the method call .
< p > This interface is required .
*/
interface com::sun::star::sdbc::XResultSet;
/** provides access to data of the content the cursor is pointing to.
< p > Note that every method of this interface implementation additionally
may throw a ResultSetException ( which is derived from
com : : sun : : star : : sdbc : : SQLException to be compatible
to that interface ) . The new exception transports another exception ,
which indicates the reason for the failure of the method call .
< p > This interface is required .
*/
interface com::sun::star::sdbc::XRow;
/** makes it possible to abort running activities ( i.e. to cancel
retrieving data from a server ) .
< p > Note that every method of this interface implementation additionally
may throw a ResultSetException ( which is derived from
com : : sun : : star : : sdbc : : SQLException to be compatible
to that interface ) . The new exception transports another exception ,
which indicates the reason for the failure of the method call .
< p > This interface is required .
*/
interface com::sun::star::sdbc::XCloseable;
/** holds properties of the result set.
< p > This interface is required .
*/
interface com::sun::star::beans::XPropertySet;
/** controls the travel mode of the result set cursor.
< p > There are two possible travel modes :
< p > < table border = 1 >
< tr > < td > CursorTravelMode : : BLOCKING < / td >
< td > Each travel method of the result set will not return until the
data for the new position were retrieved . < / td > < / tr >
< tr > < td > CursorTravelMode : : NONBLOCKING < / td >
< td > The implementation will throw a
< code > CursorWouldBlockException < / code > , if the data for the new
position are not retrieved yet . < / td > < / tr >
< / table >
< p > The following pseudo - code illustrates the usage of a non - blocking
cursor :
@ code { . java }
bProcessedAllRows = false
while ( ! bProcessedAllRows )
{
cursor . setPropertyValue ( " CursorTravelMode " , BLOCKING )
cursor . travelSomeWhere ( )
collectRowData ( )
cursor . setPropertyValue ( " CursorTravelMode " , NONBLOCKING )
bGoOn = true ;
while ( bGoOn )
{
try
{
cursor . travelSomeWhere ( )
collectRowData ( )
}
catch ( CursorWouldBlockException )
{
// No more data at the moment.
bGoOn = false
}
}
doSomethingWithCollectedRowData ( )
bProcessedAllRows = . . .
}
@ endcode
< p >
If this property is not supported , the implementation needs to provide
a blocking cursor .
< / p >
< p >
The implementation initially needs to set the value of this property
to CursorTravelMode : : BLOCKING .
< / p >
@ see CursorTravelMode
*/
[optional, property] long CursorTravelMode;
/** contains the number of rows obtained (so far) from the data source. */
[readonly, property] long RowCount;
/** indicates that all rows of the result set have been obtained. */
[readonly, property] boolean IsRowCountFinal;
/** provides access to the content identifier and the content object
itself .
< p > This interface is required .
*/
interface XContentAccess;
/** can be implemented to provide a complete JDBC conform result set
interface for the implementation of this service .
< p > The implementation of this service is optional .
*/
service com::sun::star::sdbc::ResultSet;
};
}; }; }; };
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