//-----------------------------------------------------------------------------
// copyCriteria
//-----------------------------------------------------------------------------
/// <summary>
/// Copy the query criteria from one Query object into this Query object.
/// </summary>
/// <param name="queryToCopy">
/// Query object whose criteria is to be copied.
/// </param>
public void copyCriteria(
Query queryToCopy)
{
RCODE rc = 0;
if ((rc = xflaim_Query_copyCriteria( m_pQuery, queryToCopy.getQuery())) != 0)
{
throw new XFlaimException( rc);
}
}
//-----------------------------------------------------------------------
// Find the document that has a given name of "Peter", state of "California", and
// return the "Age" element from the document. The XPATH query is as follows:
//
// person[Name/Given == "Peter" && Address/State == "California"]/Age
//-----------------------------------------------------------------------
static DOMNode queryDatabase( Db db)
{
Query query = new Query( db, (uint)PredefinedXFlaimCollections.XFLM_DATA_COLLECTION);
// First set up the query criteria. This method calls the Query.addXXXXX methods to
// set up the query. An alternative way to set up the query criteria is to call the
// Query.setupQueryExpr method, which is not illustrated here.
// person
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiPersonElementId);
// [
query.addOperator( eQueryOperators.XFLM_LBRACKET_OP, 0);
// Name/Given
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiNameElementId);
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiGivenElementId);
// == "Peter"
query.addOperator( eQueryOperators.XFLM_EQ_OP, 0);
query.addStringValue( "Peter");
// &&
query.addOperator( eQueryOperators.XFLM_AND_OP, 0);
// Address/State
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiAddressElementId);
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiStateElementId);
// == "California"
query.addOperator( eQueryOperators.XFLM_EQ_OP, 0);
query.addStringValue( "California");
// ]
query.addOperator( eQueryOperators.XFLM_RBRACKET_OP, 0);
// /Age
query.addXPathComponent( eXPathAxisTypes.CHILD_AXIS, eDomNodeType.ELEMENT_NODE, uiAgeElementId);
// Retrieve and return the first result
return( query.getFirst( null, 0));
}
