/// <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);
}
public override bool CheckIndexExistence(IndexEntityType entityType, string indexName, IDictionary <string, string> config)
{
IDictionary <string, string> configuration = _indexConfigStore.get(entityType.entityClass(), indexName);
if (configuration == null)
{
return(false);
}
string providerName = configuration[Org.Neo4j.Graphdb.index.IndexManager_Fields.PROVIDER];
IndexImplementation provider = _providerLookup.getProviderByName(providerName);
assertConfigMatches(provider, indexName, configuration, config);
return(true);
}