/// <summary>
/// The SnapshotCustomIndex
/// </summary>
/// <param name="queryGraphValue">The <see cref="QueryGraphValue"/></param>
/// <param name="indexRepository">The <see cref="EventTableIndexRepository"/></param>
/// <param name="attributes">The <see cref="Attribute"/> array</param>
/// <param name="agentInstanceContext">The <see cref="AgentInstanceContext"/></param>
/// <param name="queryPlanLogging">The <see cref="bool"/></param>
/// <param name="queryPlanLogDestination">The <see cref="ILog"/></param>
/// <param name="objectName">The <see cref="string"/></param>
/// <returns>The <see cref="ICollection{EventBean}"/></returns>
private static NullableObject <ICollection <EventBean> > SnapshotCustomIndex(
QueryGraphValue queryGraphValue,
EventTableIndexRepository indexRepository,
Attribute[] attributes,
AgentInstanceContext agentInstanceContext,
bool queryPlanLogging,
ILog queryPlanLogDestination,
string objectName)
{
EventTable table = null;
string indexName = null;
QueryGraphValueEntryCustomOperation values = null;
// find matching index
var found = false;
foreach (var valueDesc in queryGraphValue.Items)
{
if (valueDesc.Entry is QueryGraphValueEntryCustom)
{
var customIndex = (QueryGraphValueEntryCustom)valueDesc.Entry;
foreach (var entry in indexRepository.TableIndexesRefCount)
{
if (entry.Key.AdvancedIndexDesc == null)
{
continue;
}
var metadata = indexRepository.EventTableIndexMetadata.Indexes.Get(entry.Key);
if (metadata == null || metadata.ExplicitIndexNameIfExplicit == null)
{
continue;
}
EventAdvancedIndexProvisionDesc provision = metadata.QueryPlanIndexItem.AdvancedIndexProvisionDesc;
if (provision == null)
{
continue;
}
foreach (var op in customIndex.Operations)
{
if (!provision.Factory.ProvidesIndexForOperation(op.Key.OperationName, op.Value.PositionalExpressions))
{
continue;
}
if (ExprNodeUtility.DeepEquals(entry.Key.AdvancedIndexDesc.IndexedExpressions, op.Key.ExprNodes, true))
{
values = op.Value;
table = entry.Value.Table;
indexName = metadata.ExplicitIndexNameIfExplicit;
found = true;
break;
}
}
if (found)
{
break;
}
}
}
if (found)
{
break;
}
}
if (table == null)
{
return(null);
}
// report
queryPlanReport(indexName, table, attributes, agentInstanceContext, queryPlanLogging, queryPlanLogDestination, objectName);
// execute
EventTableQuadTree index = (EventTableQuadTree)table;
var x = Eval(values.PositionalExpressions.Get(0).ExprEvaluator, agentInstanceContext, "x");
var y = Eval(values.PositionalExpressions.Get(1).ExprEvaluator, agentInstanceContext, "y");
var width = Eval(values.PositionalExpressions.Get(2).ExprEvaluator, agentInstanceContext, "width");
var height = Eval(values.PositionalExpressions.Get(3).ExprEvaluator, agentInstanceContext, "height");
var result = index.QueryRange(x, y, width, height);
return(new NullableObject <ICollection <EventBean> >(result));
}
private static NullableObject<ICollection<EventBean>> SnapshotCustomIndex(
QueryGraphValue queryGraphValue,
EventTableIndexRepository indexRepository,
Attribute[] annotations,
AgentInstanceContext agentInstanceContext,
string objectName)
{
EventTable table = null;
string indexName = null;
QueryGraphValueEntryCustomOperation values = null;
// find matching index
var found = false;
foreach (var valueDesc in queryGraphValue.Items) {
if (valueDesc.Entry is QueryGraphValueEntryCustom) {
var customIndex = (QueryGraphValueEntryCustom) valueDesc.Entry;
foreach (var entry in indexRepository.TableIndexesRefCount) {
if (entry.Key.AdvancedIndexDesc == null) {
continue;
}
var metadata = indexRepository.EventTableIndexMetadata.Indexes.Get(entry.Key);
if (metadata == null || metadata.ExplicitIndexNameIfExplicit == null) {
continue;
}
var provision = metadata.OptionalQueryPlanIndexItem.AdvancedIndexProvisionDesc;
if (provision == null) {
continue;
}
foreach (var op in customIndex.Operations) {
if (!provision.Factory.Forge.ProvidesIndexForOperation(op.Key.OperationName)) {
continue;
}
var indexProperties = entry.Key.AdvancedIndexDesc.IndexExpressions;
var expressions = op.Key.Expressions;
if (Arrays.AreEqual(indexProperties, expressions)) {
values = op.Value;
table = entry.Value.Table;
indexName = metadata.ExplicitIndexNameIfExplicit;
found = true;
break;
}
}
if (found) {
break;
}
}
}
if (found) {
break;
}
}
if (table == null) {
return null;
}
// report
QueryPlanReport(indexName, table, annotations, agentInstanceContext, objectName);
// execute
var index = (EventTableQuadTree) table;
var x = Eval(values.PositionalExpressions.Get(0), agentInstanceContext, "x");
var y = Eval(values.PositionalExpressions.Get(1), agentInstanceContext, "y");
var width = Eval(values.PositionalExpressions.Get(2), agentInstanceContext, "width");
var height = Eval(values.PositionalExpressions.Get(3), agentInstanceContext, "height");
return new NullableObject<ICollection<EventBean>>(
index.QueryRange(x, y, width, height));
}
