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LabelsIT.java
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LabelsIT.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.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.server.rest;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import org.junit.Test;
import org.neo4j.graphdb.Node;
import org.neo4j.helpers.collection.Iterables;
import org.neo4j.kernel.impl.annotations.Documented;
import org.neo4j.server.rest.domain.JsonParseException;
import org.neo4j.server.rest.web.PropertyValueException;
import org.neo4j.test.GraphDescription;
import org.neo4j.test.GraphDescription.LABEL;
import org.neo4j.test.GraphDescription.NODE;
import org.neo4j.test.GraphDescription.PROP;
import static java.util.Arrays.asList;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.neo4j.graphdb.Label.label;
import static org.neo4j.graphdb.Neo4jMatchers.hasLabel;
import static org.neo4j.graphdb.Neo4jMatchers.hasLabels;
import static org.neo4j.graphdb.Neo4jMatchers.inTx;
import static org.neo4j.helpers.collection.Iterables.map;
import static org.neo4j.helpers.collection.Iterators.asSet;
import static org.neo4j.server.rest.domain.JsonHelper.createJsonFrom;
import static org.neo4j.server.rest.domain.JsonHelper.readJson;
import static org.neo4j.test.GraphDescription.PropType.ARRAY;
import static org.neo4j.test.GraphDescription.PropType.STRING;
public class LabelsIT extends AbstractRestFunctionalTestBase
{
@Documented( "Adding a label to a node." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true ) } )
public void adding_a_label_to_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
String nodeUri = getNodeUri( nodes.get( "Clint Eastwood" ) );
gen.get()
.expectedStatus( 204 )
.payload( createJsonFrom( "Person" ) )
.post( nodeUri + "/labels" );
}
@Documented( "Adding multiple labels to a node." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true ) } )
public void adding_multiple_labels_to_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
String nodeUri = getNodeUri( nodes.get( "Clint Eastwood" ) );
gen.get()
.expectedStatus( 204 )
.payload( createJsonFrom( new String[]{"Person", "Actor"} ) )
.post( nodeUri + "/labels" );
// Then
assertThat( nodes.get( "Clint Eastwood" ), inTx( graphdb(), hasLabels( "Person", "Actor" ) ) );
}
@Documented( "Adding a label with an invalid name.\n" +
"\n" +
"Labels with empty names are not allowed, however, all other valid strings are accepted as label names.\n" +
"Adding an invalid label to a node will lead to a HTTP 400 response." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true ) } )
public void adding_an_invalid_label_to_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
String nodeUri = getNodeUri( nodes.get( "Clint Eastwood" ) );
gen.get()
.expectedStatus( 400 )
.payload( createJsonFrom( "" ) )
.post( nodeUri + "/labels" );
}
@Documented( "Replacing labels on a node.\n" +
"\n" +
"This removes any labels currently on a node, and replaces them with the labels passed in as the\n" +
"request body." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true,
labels = { @LABEL( "Person" ) }) } )
public void replacing_labels_on_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
String nodeUri = getNodeUri( nodes.get( "Clint Eastwood" ) );
// When
gen.get()
.expectedStatus( 204 )
.payload( createJsonFrom( new String[]{"Actor", "Director"}) )
.put( nodeUri + "/labels" );
// Then
assertThat( nodes.get( "Clint Eastwood" ), inTx(graphdb(), hasLabels("Actor", "Director")) );
}
@Documented( "Listing labels for a node." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", labels = { @LABEL( "Actor" ), @LABEL( "Director" ) }, setNameProperty = true ) } )
public void listing_node_labels() throws JsonParseException
{
Map<String, Node> nodes = data.get();
String nodeUri = getNodeUri( nodes.get( "Clint Eastwood" ) );
String body = gen.get()
.expectedStatus( 200 )
.get( nodeUri + "/labels" )
.entity();
@SuppressWarnings("unchecked")
List<String> labels = (List<String>) readJson( body );
assertEquals( asSet( "Actor", "Director" ), Iterables.asSet( labels ) );
}
@Documented( "Removing a label from a node." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true, labels = { @LABEL( "Person" ) } ) } )
public void removing_a_label_from_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
Node node = nodes.get( "Clint Eastwood" );
String nodeUri = getNodeUri( node );
String labelName = "Person";
gen.get()
.expectedStatus( 204 )
.delete( nodeUri + "/labels/" + labelName );
assertThat( node, inTx( graphdb(), not( hasLabel( label( labelName ) ) ) ) );
}
@Documented( "Removing a non-existent label from a node." )
@Test
@GraphDescription.Graph( nodes = { @NODE( name = "Clint Eastwood", setNameProperty = true ) } )
public void removing_a_non_existent_label_from_a_node() throws PropertyValueException
{
Map<String,Node> nodes = data.get();
Node node = nodes.get( "Clint Eastwood" );
String nodeUri = getNodeUri( node );
String labelName = "Person";
gen.get()
.expectedStatus( 204 )
.delete( nodeUri + "/labels/" + labelName );
assertThat( node, inTx( graphdb(), not( hasLabel( label( labelName ) ) ) ) );
}
@Documented( "Get all nodes with a label." )
@Test
@GraphDescription.Graph( nodes = {
@NODE( name = "Clint Eastwood", setNameProperty = true, labels = { @LABEL( "Actor" ), @LABEL( "Director" ) } ),
@NODE( name = "Donald Sutherland", setNameProperty = true, labels = { @LABEL( "Actor" ) } ),
@NODE( name = "Steven Spielberg", setNameProperty = true, labels = { @LABEL( "Director" ) } )
} )
public void get_all_nodes_with_label() throws JsonParseException
{
data.get();
String uri = getNodesWithLabelUri( "Actor" );
String body = gen.get()
.expectedStatus( 200 )
.get( uri )
.entity();
List<?> parsed = (List<?>) readJson( body );
assertEquals( asSet( "Clint Eastwood", "Donald Sutherland" ), Iterables
.asSet( map( getProperty( "name", String.class ), parsed ) ) );
}
@Test
@Documented( "Get nodes by label and property.\n" +
"\n" +
"You can retrieve all nodes with a given label and property by passing one property as a query parameter.\n" +
"Notice that the property value is JSON-encoded and then URL-encoded.\n" +
"\n" +
"If there is an index available on the label/property combination you send, that index will be used. If no\n" +
"index is available, all nodes with the given label will be filtered through to find matching nodes.\n" +
"\n" +
"Currently, it is not possible to search using multiple properties." )
@GraphDescription.Graph( nodes = {
@NODE( name = "Donald Sutherland", labels={ @LABEL( "Person" )} ),
@NODE( name = "Clint Eastwood", labels={ @LABEL( "Person" )}, properties = { @PROP( key = "name", value = "Clint Eastwood" )}),
@NODE( name = "Steven Spielberg", labels={ @LABEL( "Person" )}, properties = { @PROP( key = "name", value = "Steven Spielberg" )})})
public void get_nodes_with_label_and_property() throws JsonParseException, UnsupportedEncodingException
{
data.get();
String labelName = "Person";
String result = gen.get()
.expectedStatus( 200 )
.get( getNodesWithLabelAndPropertyUri( labelName, "name", "Clint Eastwood" ) )
.entity();
List<?> parsed = (List<?>) readJson( result );
assertEquals( asSet( "Clint Eastwood" ), Iterables.asSet( map( getProperty( "name", String.class ), parsed ) ) );
}
@Test
@Documented( "Get nodes by label and array property." )
@GraphDescription.Graph( nodes = {
@NODE(name = "Donald Sutherland", labels = {@LABEL("Person")}),
@NODE(name = "Clint Eastwood", labels = {@LABEL("Person")}, properties =
{@PROP(key = "names", value = "Clint,Eastwood", type = ARRAY, componentType = STRING)}),
@NODE(name = "Steven Spielberg", labels = {@LABEL("Person")}, properties =
{@PROP(key = "names", value = "Steven,Spielberg", type = ARRAY, componentType = STRING)})})
public void get_nodes_with_label_and_array_property() throws JsonParseException, UnsupportedEncodingException
{
data.get();
String labelName = "Person";
String uri = getNodesWithLabelAndPropertyUri( labelName, "names", new String[] { "Clint", "Eastwood" } );
String result = gen.get()
.expectedStatus( 200 )
.get( uri )
.entity();
List<?> parsed = (List<?>) readJson( result );
assertEquals( 1, parsed.size() );
//noinspection AssertEqualsBetweenInconvertibleTypes
assertEquals( Iterables.asSet( asList( asList( "Clint", "Eastwood" ) ) ),
Iterables.asSet( map( getProperty( "names", List.class ), parsed ) ) );
}
@Test
@Documented( "List all labels.\n" +
" \n" +
"By default, the server will return labels in use only. If you also want to return labels not in use,\n" +
"append the \"in_use=0\" query parameter." )
@GraphDescription.Graph( nodes = {
@NODE( name = "Clint Eastwood", setNameProperty = true, labels = { @LABEL( "Person" ), @LABEL( "Actor" ), @LABEL( "Director" ) } ),
@NODE( name = "Donald Sutherland", setNameProperty = true, labels = { @LABEL( "Person" ), @LABEL( "Actor" ) } ),
@NODE( name = "Steven Spielberg", setNameProperty = true, labels = { @LABEL( "Person" ), @LABEL( "Director" ) } )
} )
public void list_all_labels() throws JsonParseException
{
data.get();
String uri = getLabelsUri();
String body = gen.get()
.expectedStatus( 200 )
.get( uri )
.entity();
Set<?> parsed = Iterables.asSet((List<?>) readJson( body ));
assertTrue( parsed.contains( "Person" ) );
assertTrue( parsed.contains( "Actor" ) );
assertTrue( parsed.contains( "Director" ) );
}
private <T> Function<Object, T> getProperty( final String propertyKey, final Class<T> propertyType )
{
return from -> {
Map<?, ?> node = (Map<?, ?>) from;
Map<?, ?> data1 = (Map<?, ?>) node.get( "data" );
return propertyType.cast( data1.get( propertyKey ) );
};
}
}