added examples for graphs

Author: a-brandt

src/test/java/com/arangodb/example/graph/CreateGraphExample.java

@@ -32,9 +32,8 @@
 import com.arangodb.entity.GraphEntity;
 
 /**
- * AQL example with new cursor implementation
+ * Create graph example
  * 
- * @author tamtam180 - kirscheless at gmail.com
  * @author a-brandt
  *
  */

src/test/java/com/arangodb/example/graph/CreateVerticesAndEdgesExample.java

@@ -26,9 +26,8 @@
 import com.arangodb.entity.marker.VertexEntity;
 
 /**
- * AQL example with new cursor implementation
+ * AQL example creating vertices and edges
  * 
- * @author tamtam180 - kirscheless at gmail.com
  * @author a-brandt
  *
  */

src/test/java/com/arangodb/example/graph/DeleteVerticesAndEdgesExample.java

@@ -0,0 +1,99 @@
+package com.arangodb.example.graph;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.arangodb.ArangoDriver;
+import com.arangodb.ArangoException;
+import com.arangodb.ErrorNums;
+import com.arangodb.entity.DeletedEntity;
+import com.arangodb.entity.EdgeEntity;
+import com.arangodb.entity.marker.VertexEntity;
+
+/**
+ * Delete vertices and edges example
+ * 
+ * @author a-brandt
+ *
+ */
+public class DeleteVerticesAndEdgesExample extends BaseExample {
+
+	private static final String DATABASE_NAME = "DeleteVerticesAndEdgesExample";
+
+	private static final String GRAPH_NAME = "example_graph1";
+	private static final String EDGE_COLLECTION_NAME = "edgeColl1";
+	private static final String VERTEXT_COLLECTION_NAME = "vertexColl1";
+
+	public ArangoDriver arangoDriver;
+
+	@Before
+	public void _before() throws ArangoException {
+		removeTestDatabase(DATABASE_NAME);
+
+		arangoDriver = getArangoDriver(getConfiguration());
+		createDatabase(arangoDriver, DATABASE_NAME);
+		createGraph(arangoDriver, GRAPH_NAME, EDGE_COLLECTION_NAME, VERTEXT_COLLECTION_NAME);
+	}
+
+	@Test
+	public void deleteVertex() throws ArangoException {
+
+		//
+		printHeadline("delete vertex");
+		//
+
+		VertexEntity<Person> v1 = createVertex(new Person("A", Person.MALE));
+
+		DeletedEntity deletedEntity = arangoDriver.graphDeleteVertex(GRAPH_NAME, VERTEXT_COLLECTION_NAME,
+			v1.getDocumentKey());
+		Assert.assertNotNull(deletedEntity);
+		Assert.assertTrue(deletedEntity.getDeleted());
+
+		try {
+			arangoDriver.graphGetVertex(GRAPH_NAME, VERTEXT_COLLECTION_NAME, v1.getDocumentKey(), Person.class);
+			Assert.fail("graphGetVertex should fail");
+		} catch (ArangoException ex) {
+			Assert.assertEquals(ErrorNums.ERROR_ARANGO_DOCUMENT_NOT_FOUND, ex.getErrorNumber());
+		}
+	}
+
+	@Test
+	public void getEdge() throws ArangoException {
+
+		//
+		printHeadline("delete edge");
+		//
+
+		VertexEntity<Person> v1 = createVertex(new Person("A", Person.MALE));
+		VertexEntity<Person> v2 = createVertex(new Person("B", Person.FEMALE));
+		EdgeEntity<Knows> e1 = createEdge(v1, v2, new Knows(1984));
+
+		DeletedEntity deletedEntity = arangoDriver.graphDeleteEdge(GRAPH_NAME, EDGE_COLLECTION_NAME,
+			e1.getDocumentKey());
+		Assert.assertNotNull(deletedEntity);
+		Assert.assertTrue(deletedEntity.getDeleted());
+
+		try {
+			arangoDriver.graphGetEdge(GRAPH_NAME, EDGE_COLLECTION_NAME, e1.getDocumentKey(), Knows.class);
+			Assert.fail("graphGetEdge should fail");
+		} catch (ArangoException ex) {
+			Assert.assertEquals(ErrorNums.ERROR_ARANGO_DOCUMENT_NOT_FOUND, ex.getErrorNumber());
+		}
+	}
+
+	private VertexEntity<Person> createVertex(Person person) throws ArangoException {
+		VertexEntity<Person> v = arangoDriver.graphCreateVertex(GRAPH_NAME, VERTEXT_COLLECTION_NAME, person, true);
+		Assert.assertNotNull(v);
+		return v;
+	}
+
+	private EdgeEntity<Knows> createEdge(VertexEntity<Person> personFrom, VertexEntity<Person> personTo, Knows knows)
+			throws ArangoException {
+		EdgeEntity<Knows> e = arangoDriver.graphCreateEdge(GRAPH_NAME, EDGE_COLLECTION_NAME,
+			personFrom.getDocumentHandle(), personTo.getDocumentHandle(), knows, false);
+		Assert.assertNotNull(e);
+		return e;
+	}
+
+}