Package oracle.pgx.api.subgraph

Class PgSqlSubgraphReader

java.lang.Object

oracle.pgx.api.subgraph.AbstractSubgraphReader<R>

oracle.pgx.api.subgraph.PgqlBasedSubgraphReader<PgSqlSubgraphReader,PreparedPgSqlPgqlQuery>

oracle.pgx.api.subgraph.PgSqlSubgraphReader

@BetaApi
public class PgSqlSubgraphReader
extends PgqlBasedSubgraphReader<PgSqlSubgraphReader,PreparedPgSqlPgqlQuery>

A subgraph reader for SQL Property Graphs. This class can be used to declare which subgraph should be loaded. Call AbstractSubgraphReader.load() similarly named functions to trigger the loading operation.

Method Summary

Modifier and Type	Method	Description
PreparedPgSqlPgqlQuery	preparedPgqlQuery(String query)	Adds a prepared query to list of queries that will be executed to load the subgraph.

Methods inherited from class oracle.pgx.api.subgraph.PgqlBasedSubgraphReader

connections, dataSourceId, escapeKeysWithPgxSpecialCharacters, jdbcUrl, keystoreAlias, loadAsync, loadAsync, password, queryPgql, username, withConfig

Methods inherited from class oracle.pgx.api.subgraph.AbstractSubgraphReader

load, load

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

preparedPgqlQuery

public PreparedPgSqlPgqlQuery preparedPgqlQuery(String query)

Description copied from class: PgqlBasedSubgraphReader

Adds a prepared query to list of queries that will be executed to load the subgraph. The query has to also start with a MATCH clause. This returns a builder which can be used to specify arguments for the prepared query. All the arguments must be provided before the reading operation is triggered.

Specified by:

preparedPgqlQuery in class PgqlBasedSubgraphReader<PgSqlSubgraphReader,PreparedPgSqlPgqlQuery>

Parameters:

query - The PGQL query.

Returns:

A builder used for providing arguments of the prepared query.