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BuiltInSchemaProcedures.java
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BuiltInSchemaProcedures.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.builtinprocs;
import java.util.List;
import java.util.stream.Stream;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.procedure.Context;
import org.neo4j.procedure.Description;
import org.neo4j.procedure.Mode;
import org.neo4j.procedure.Procedure;
public class BuiltInSchemaProcedures
{
@Context
public GraphDatabaseAPI db;
@Context
public KernelTransaction tx;
@Procedure( name = "db.schemaAsTable", mode = Mode.READ )
@Description( "Show the schema of the data in tabular form." )
public Stream<SchemaInfoResult> schemaAsTable()
{
return new SchemaCalculator( db, tx ).calculateTabularResultStream();
}
// TODO: Next step
// @Procedure( value = "db.schema.graph", mode = Mode.READ ) // TODO: Change to db.schema when ready to completly replace old one
// @Description( "Show the schema of the data." ) // old description
// public Stream<SchemaProcedure.GraphResult> schemaAsGraph() //TODO: Maybe extract inner result classes
// {
// return new SchemaCalculator( db, tx ).calculateGraphResultStream();
// }
public static class SchemaInfoResult
{
/**
* Indicates whether the entry is a node or a relationship
*/
public final String type;
/**
* A combination of labels or a relationship
*/
public final List<String> nodeLabelsOrRelType;
/**
* A property that occurs on the given label combination / relationship type
*/
public final String property;
/**
* The CypherType of the given property on the given label combination / relationship type
*/
public final String cypherType;
public SchemaInfoResult( String type, List<String> nodeLabelsOrRelType, String property, String cypherType )
{
this.type = type;
this.nodeLabelsOrRelType = nodeLabelsOrRelType;
this.property = property;
this.cypherType = cypherType;
}
}
}