public static class GraphManager.ManagedGraphProvider extends Object implements GraphProvider, AutoCloseable
Graph implementation's GraphProvider instances.
When openTestGraph(Configuration) is called the created object is stored in a list and when tests are
complete the tryClearGraphs() is called. When this is called, an attempt is made to close all open graphs.GraphProvider.Descriptor, GraphProvider.TestListenerCORE_IMPLEMENTATIONS| Constructor and Description |
|---|
ManagedGraphProvider(GraphProvider innerGraphProvider) |
| Modifier and Type | Method and Description |
|---|---|
void |
clear(Configuration configuration)
If possible (usually with persisted graph) clear the space on disk given the configuration that would be used
to construct the graph.
|
void |
clear(Graph graph,
Configuration configuration)
Clears a
Graph of all data and settings. |
void |
close() |
Object |
convertId(Object id,
Class<? extends Element> c)
Converts an identifier from a test to an identifier accepted by the
Graph instance. |
String |
convertLabel(String label)
Converts an label from a test to an label accepted by the Graph instance.
|
GraphComputer |
getGraphComputer(Graph graph)
Create a
GraphComputer from the Graph instance. |
Set<Class> |
getImplementations()
Get the set of concrete implementations of certain classes and interfaces utilized by the test suite.
|
Optional<Graph.Features> |
getStaticFeatures()
Gets a
Graph.Features implementation that contains graph feature configuration that will never change
from execution to execution of the tests given this current GraphProvider implementation. |
Optional<GraphProvider.TestListener> |
getTestListener()
Returns a
GraphProvider.TestListener implementation that provides feedback to the GraphProvider implementation. |
String |
getWorkingDirectory()
Helper method for those build
GraphProvider implementations that need a standard working directory
for tests (e.g. |
void |
loadGraphData(Graph graph,
LoadGraphWith loadGraphWith,
Class testClass,
String testName)
Tests are annotated with a
LoadGraphWith annotation. |
Configuration |
newGraphConfiguration(String graphName,
Class<?> test,
String testMethodName,
LoadGraphWith.GraphData loadGraphWith)
When implementing this method ensure that a test suite can override any settings EXCEPT the
"gremlin.graph" setting which should be defined by the implementer.
|
Configuration |
newGraphConfiguration(String graphName,
Class<?> test,
String testMethodName,
Map<String,Object> configurationOverrides,
LoadGraphWith.GraphData loadGraphWith)
When implementing this method ensure that a test suite can override any settings EXCEPT the
"gremlin.graph" setting which should be defined by the implementer.
|
Graph |
openTestGraph(Configuration config)
Creates a new
Graph instance from the org.apache.commons.configuration.Configuration object using GraphFactory. |
Configuration |
standardGraphConfiguration(Class<?> test,
String testMethodName,
LoadGraphWith.GraphData loadGraphWith)
|
Graph |
standardTestGraph(Class<?> test,
String testMethodName,
LoadGraphWith.GraphData loadGraphWith)
Creates a new
Graph instance using the default
org.apache.commons.configuration.Configuration from
GraphProvider.standardGraphConfiguration(Class, String, LoadGraphWith.GraphData). |
GraphTraversalSource |
traversal(Graph graph)
Create a
GraphTraversalSource from a Graph instance. |
GraphTraversalSource |
traversal(Graph graph,
TraversalStrategy... strategies)
Create a
GraphTraversalSource from a Graph instance. |
void |
tryClearGraphs() |
public ManagedGraphProvider(GraphProvider innerGraphProvider)
public void tryClearGraphs()
public String getWorkingDirectory()
GraphProviderGraphProvider implementations that need a standard working directory
for tests (e.g. graphs that persist data to disk). Typically, there is no need to override the default
behavior of this method and if it is overridden, it is usually best to continue to use the TestHelper
to produce the working directory as it will create the path in the appropriate build directories.getWorkingDirectory in interface GraphProviderpublic GraphTraversalSource traversal(Graph graph)
GraphProviderGraphTraversalSource from a Graph instance. The default implementation does not
use GraphComputer so providers should override as necessary if their implementation is testing
something that requires a different engine type, like GraphComputer.traversal in interface GraphProviderpublic GraphTraversalSource traversal(Graph graph, TraversalStrategy... strategies)
GraphProviderGraphTraversalSource from a Graph instance. The default implementation does not use
GraphComputer so providers should override as necessary if their implementation is testing
something that requires a different engine type, like GraphComputer.
Implementations should apply strategies as necessary to the
GraphTraversalSource before calling
it's create method.traversal in interface GraphProviderpublic GraphComputer getGraphComputer(Graph graph)
GraphProviderGraphComputer from the Graph instance. The default implementation simply calls graph.compute().getGraphComputer in interface GraphProvidergraph - the graph to get the graph computer frompublic Graph standardTestGraph(Class<?> test, String testMethodName, LoadGraphWith.GraphData loadGraphWith)
GraphProviderGraph instance using the default
org.apache.commons.configuration.Configuration from
GraphProvider.standardGraphConfiguration(Class, String, LoadGraphWith.GraphData).standardTestGraph in interface GraphProviderpublic Graph openTestGraph(Configuration config)
GraphProviderGraph instance from the org.apache.commons.configuration.Configuration object using GraphFactory.
The assumption here is that the Configuration has been created by one of the
GraphProvider.newGraphConfiguration(String, Class, String, LoadGraphWith.GraphData) methods and has therefore
already been modified by the implementation as necessary for Graph creation.openTestGraph in interface GraphProviderpublic Configuration standardGraphConfiguration(Class<?> test, String testMethodName, LoadGraphWith.GraphData loadGraphWith)
GraphProviderConfiguration object that can construct a Graph instance from GraphFactory.
Note that this method should create a Graph using the graphName of "standard", meaning it
should always return a configuration instance that generates the same Graph from the
GraphFactory.standardGraphConfiguration in interface GraphProviderpublic void clear(Configuration configuration)
throws Exception
GraphProvider#clear(Graph, org.apache.commons.configuration.Configuration) with
a null graph argument.
Implementations should be able to accept an argument of null for the org.apache.commons.configuration.Configuration
as well, and a proper handling is needed. Otherwise, a NullPointerException may be thrown.clear in interface GraphProviderExceptionpublic void clear(Graph graph, Configuration configuration) throws Exception
GraphProviderGraph of all data and settings. Implementations will have different ways of handling this.
It is typically expected that Graph.close() will be called and open transactions will be closed.
For a brute force approach, implementers can simply delete data directories provided in the configuration.
Implementers may choose a more elegant approach if it exists.
Implementations should be able to accept an argument of null for the Graph, in which case the only action
that can be performed is a clear given the configuration. The method will typically be called this way
as clean up task on setup to ensure that a persisted graph has a clear space to create a test graph.
Implementations should be able to accept an argument of null for the org.apache.commons.configuration.Configuration
as well, and a proper handling is needed. Otherwise, a NullPointerException may be thrown.
Calls to this method may occur multiple times for a specific test. Develop this method to be idempotent.clear in interface GraphProviderExceptionpublic Object convertId(Object id, Class<? extends Element> c)
GraphProviderGraph instance. Test that try to
utilize an Element identifier will pass it to this method before usage. This method should be sure to
be consistent in the return value such that calling it with "x" should always return the same transformed
value.convertId in interface GraphProviderpublic String convertLabel(String label)
GraphProviderconvertLabel in interface GraphProviderpublic Configuration newGraphConfiguration(String graphName, Class<?> test, String testMethodName, Map<String,Object> configurationOverrides, LoadGraphWith.GraphData loadGraphWith)
GraphProviderConfiguration that will generate a graph unique to that graphName.newGraphConfiguration in interface GraphProvidergraphName - a unique test graph nametest - the test classtestMethodName - the name of the testconfigurationOverrides - settings to override defaults with.loadGraphWith - the data set to load and will be null if no data is to be loadedpublic Configuration newGraphConfiguration(String graphName, Class<?> test, String testMethodName, LoadGraphWith.GraphData loadGraphWith)
GraphProviderConfiguration that will generate a graph unique to that graphName.newGraphConfiguration in interface GraphProvidergraphName - a unique test graph nametest - the test classtestMethodName - the name of the testloadGraphWith - the data set to load and will be null if no data is to be loadedpublic void loadGraphData(Graph graph, LoadGraphWith loadGraphWith, Class testClass, String testName)
GraphProviderLoadGraphWith annotation. These annotations tell the test what kind of data
to preload into the graph instance. It is up to the implementation to load the graph with the data specified
by that annotation. This method also represents the place where indices should be configured according the
the Graph implementation's API. Implementers can use the testClass and testName
arguments to implement test specific configurations to their graphs.loadGraphData in interface GraphProvidergraph - the Graph instance to load data into constructed by this GraphProviderloadGraphWith - the annotation for the currently running test - this value may be null if no graph
data is to be loaded in front of the test.testClass - the test class being executedtestName - the name of the test method being executedpublic Set<Class> getImplementations()
GraphProviderEdgeElementDefaultGraphTraversalGraphGraph.VariablesGraphTraversalB_LP_O_P_S_SE_SL_TraverserPropertyB_O_S_SE_SL_TraverserTraversalTraverserVertexVertexPropertyGraphProvider.CORE_IMPLEMENTATIONS to the
Set because these represent gremlin-core implementations that are likely not registered
by the vendor implementations.getImplementations in interface GraphProviderpublic Optional<GraphProvider.TestListener> getTestListener()
GraphProviderGraphProvider.TestListener implementation that provides feedback to the GraphProvider implementation.
By default, this returns an empty listener.getTestListener in interface GraphProviderpublic void close()
throws Exception
close in interface AutoCloseableExceptionpublic Optional<Graph.Features> getStaticFeatures()
GraphProviderGraph.Features implementation that contains graph feature configuration that will never change
from execution to execution of the tests given this current GraphProvider implementation. Implementing
this method will allow the test suite to avoid creation of a Graph instance and thus speed up the
execution of tests if that creation process is expensive. It is important that this static set of features be
representative of what the Graph instance produced by this GraphProvider can actually do or
else the cost of Graph instantiation will be incurred when it doesn't need to be. It is also important
that this method be faster than the cost of Graph creation in the first place or there really won't be
any difference in execution speed. In cases where some features are static and others are not, simply throw
an UnsupportedOperationException from those features to let the test suite know that it cannot rely
on them and the test suite will revert to using a constructed Graph instance.getStaticFeatures in interface GraphProviderCopyright © 2013–2019 Apache Software Foundation. All rights reserved.