/// <summary>
/// Get an applier suitable for the specified IndexCommand.
/// </summary>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private TransactionApplier applier(org.neo4j.kernel.impl.index.IndexCommand command) throws java.io.IOException
private TransactionApplier Applier(IndexCommand command)
{
// Have we got an applier for this index?
string indexName = _defineCommand.getIndexName(command.IndexNameId);
IDictionary <string, TransactionApplier> applierByIndex = ApplierByIndexMap(command);
TransactionApplier applier = applierByIndex[indexName];
if (applier == null)
{
// We don't. Have we got an applier for the provider of this index?
IndexEntityType entityType = IndexEntityType.byId(command.EntityType);
IDictionary <string, string> config = _indexConfigStore.get(entityType.entityClass(), indexName);
if (config == null)
{
// This provider doesn't even exist, return an EMPTY handler, i.e. ignore these changes.
// Could be that the index provider is temporarily unavailable?
return(TransactionApplier_Fields.Empty);
}
string providerName = config[PROVIDER];
applier = ApplierByProvider[providerName];
if (applier == null)
{
// We don't, so create the applier
applier = _applierLookup.newApplier(providerName, _mode.needsIdempotencyChecks());
applier.VisitIndexDefineCommand(_defineCommand);
ApplierByProvider[providerName] = applier;
}
// Also cache this applier for this index
applierByIndex[indexName] = applier;
}
return(applier);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private CommitContext commitContext(org.neo4j.kernel.impl.index.IndexCommand command) throws org.neo4j.internal.kernel.api.exceptions.explicitindex.ExplicitIndexNotFoundKernelException
private CommitContext CommitContext(IndexCommand command)
{
IDictionary <string, CommitContext> contextMap = CommitContextMap(command.EntityType);
string indexName = _definitions.getIndexName(command.IndexNameId);
CommitContext context = contextMap[indexName];
if (context == null)
{
IndexIdentifier identifier = new IndexIdentifier(IndexEntityType.byId(command.EntityType), indexName);
// TODO the fact that we look up index type from config here using the index store
// directly should be avoided. But how can we do it in, say recovery?
// The `dataSource.getType()` call can throw an exception if the index is concurrently deleted.
// To avoid bubbling an exception during commit, we instead ignore the commands related to that index,
// and proceed as if the index never existed, and thus cannot accept any modifications.
IndexType type = _dataSource.getType(identifier, _recovery);
context = new CommitContext(_dataSource, identifier, type, _recovery);
contextMap[indexName] = context;
}
return(context);
}
