//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.storageengine.api.schema.SchemaRule loadSingleSchemaRule(long ruleId) throws org.neo4j.internal.kernel.api.exceptions.schema.MalformedSchemaRuleException
public override SchemaRule LoadSingleSchemaRule(long ruleId)
{
ICollection <DynamicRecord> records;
try
{
records = _schemaStore.getRecords(ruleId, RecordLoad.NORMAL);
}
catch (Exception e)
{
throw new MalformedSchemaRuleException(e.Message, e);
}
return(SchemaStore.ReadSchemaRule(ruleId, records, NewRecordBuffer()));
}
protected internal override ReturnType fetchNextOrNull()
{
while (currentId <= highestId)
{
long id = currentId++;
_outerInstance.schemaStore.getRecord(id, record, RecordLoad.FORCE);
if (record.inUse() && record.StartRecord)
{
// It may be that concurrently to our reading there's a transaction dropping the schema rule
// that we're reading and that rule may have spanned multiple dynamic records.
try
{
ICollection <DynamicRecord> records;
try
{
records = _outerInstance.schemaStore.getRecords(id, RecordLoad.NORMAL);
}
catch (InvalidRecordException)
{
// This may have been due to a concurrent drop of this rule.
continue;
}
SchemaRule schemaRule = SchemaStore.ReadSchemaRule(id, records, scratchData);
if (_returnType.IsInstanceOfType(schemaRule))
{
ReturnType returnRule = _returnType.cast(schemaRule);
if (_predicate(returnRule))
{
return(returnRule);
}
}
}
catch (MalformedSchemaRuleException e)
{
if (!_ignoreMalformed)
{
throw new Exception(e);
}
}
}
}
return(null);
}