Package oracle.pgx.api.subgraph

Class PgViewSubgraphReader

java.lang.Object

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

oracle.pgx.api.subgraph.PgqlBasedSubgraphReader<PgViewSubgraphReader,PreparedPgViewPgqlQuery>

oracle.pgx.api.subgraph.PgViewSubgraphReader

@BetaApi
public class PgViewSubgraphReader
extends PgqlBasedSubgraphReader<PgViewSubgraphReader,PreparedPgViewPgqlQuery>

A subgraph reader for reading graphs from PG Views, using a set of PGQL queries.

Method Summary

Modifier and Type	Method	Description
PreparedPgViewPgqlQuery	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 PreparedPgViewPgqlQuery 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<PgViewSubgraphReader,PreparedPgViewPgqlQuery>

Parameters:

query - The PGQL query.

Returns:

A builder used for providing arguments of the prepared query.