本文整理汇总了Java中com.thinkaurelius.titan.core.schema.TitanManagement.getRelationIndex方法的典型用法代码示例。如果您正苦于以下问题:Java TitanManagement.getRelationIndex方法的具体用法?Java TitanManagement.getRelationIndex怎么用?Java TitanManagement.getRelationIndex使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.thinkaurelius.titan.core.schema.TitanManagement
的用法示例。
在下文中一共展示了TitanManagement.getRelationIndex方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testRemoveRelationIndex
import com.thinkaurelius.titan.core.schema.TitanManagement; //导入方法依赖的package包/类
@Test
public void testRemoveRelationIndex() throws InterruptedException, BackendException, ExecutionException {
tx.commit();
mgmt.commit();
// Load the "Graph of the Gods" sample data
GraphOfTheGodsFactory.loadWithoutMixedIndex(graph, true);
// Disable the "battlesByTime" index
TitanManagement m = graph.openManagement();
RelationType battled = m.getRelationType("battled");
RelationTypeIndex battlesByTime = m.getRelationIndex(battled, "battlesByTime");
m.updateIndex(battlesByTime, SchemaAction.DISABLE_INDEX);
m.commit();
graph.tx().commit();
// Block until the SchemaStatus transitions to DISABLED
assertTrue(ManagementSystem.awaitRelationIndexStatus(graph, "battlesByTime", "battled")
.status(SchemaStatus.DISABLED).call().getSucceeded());
// Remove index
MapReduceIndexManagement mri = new MapReduceIndexManagement(graph);
m = graph.openManagement();
battled = m.getRelationType("battled");
battlesByTime = m.getRelationIndex(battled, "battlesByTime");
ScanMetrics metrics = mri.updateIndex(battlesByTime, SchemaAction.REMOVE_INDEX).get();
assertEquals(6, metrics.getCustom(IndexRemoveJob.DELETED_RECORDS_COUNT));
}
示例2: testRepairRelationIndex
import com.thinkaurelius.titan.core.schema.TitanManagement; //导入方法依赖的package包/类
@Test
public void testRepairRelationIndex() throws InterruptedException, BackendException, ExecutionException {
tx.commit();
mgmt.commit();
// Load the "Graph of the Gods" sample data (WITHOUT mixed index coverage)
GraphOfTheGodsFactory.loadWithoutMixedIndex(graph, true);
// Create and enable a relation index on lives edges by reason
TitanManagement m = graph.openManagement();
PropertyKey reason = m.getPropertyKey("reason");
EdgeLabel lives = m.getEdgeLabel("lives");
m.buildEdgeIndex(lives, "livesByReason", Direction.BOTH, Order.decr, reason);
m.commit();
graph.tx().commit();
// Block until the SchemaStatus transitions to REGISTERED
assertTrue(ManagementSystem.awaitRelationIndexStatus(graph, "livesByReason", "lives")
.status(SchemaStatus.REGISTERED).call().getSucceeded());
m = graph.openManagement();
RelationTypeIndex index = m.getRelationIndex(m.getRelationType("lives"), "livesByReason");
m.updateIndex(index, SchemaAction.ENABLE_INDEX);
m.commit();
graph.tx().commit();
// Block until the SchemaStatus transitions to ENABLED
assertTrue(ManagementSystem.awaitRelationIndexStatus(graph, "livesByReason", "lives")
.status(SchemaStatus.ENABLED).call().getSucceeded());
// Run a query that hits the index but erroneously returns nothing because we haven't repaired yet
//assertFalse(graph.query().has("reason", "no fear of death").edges().iterator().hasNext());
// Repair
MapReduceIndexManagement mri = new MapReduceIndexManagement(graph);
m = graph.openManagement();
index = m.getRelationIndex(m.getRelationType("lives"), "livesByReason");
ScanMetrics metrics = mri.updateIndex(index, SchemaAction.REINDEX).get();
assertEquals(8, metrics.getCustom(IndexRepairJob.ADDED_RECORDS_COUNT));
}
示例3: call
import com.thinkaurelius.titan.core.schema.TitanManagement; //导入方法依赖的package包/类
/**
* Poll a relation index until it has a certain {@link SchemaStatus},
* or until a configurable timeout is exceeded.
*
* @return a report with information about schema state, execution duration, and the index
*/
@Override
public RelationIndexStatusReport call() throws InterruptedException {
Preconditions.checkNotNull(g, "Graph instance must not be null");
Preconditions.checkNotNull(relationIndexName, "Index name must not be null");
Preconditions.checkNotNull(status, "Target status must not be null");
RelationTypeIndex idx;
Timer t = new Timer(TimestampProviders.MILLI).start();
boolean timedOut;
while (true) {
SchemaStatus actualStatus = null;
TitanManagement mgmt = null;
try {
mgmt = g.openManagement();
idx = mgmt.getRelationIndex(mgmt.getRelationType(relationTypeName), relationIndexName);
actualStatus = idx.getIndexStatus();
LOGGER.info("Index {} (relation type {}) has status {}", relationIndexName, relationTypeName, actualStatus);
if (status.equals(actualStatus)) {
return new RelationIndexStatusReport(true, relationIndexName, relationTypeName, actualStatus, status, t.elapsed());
}
} finally {
if (null != mgmt)
mgmt.rollback(); // Let an exception here propagate up the stack
}
timedOut = null != timeout && 0 < t.elapsed().compareTo(timeout);
if (timedOut) {
LOGGER.info("Timed out ({}) while waiting for index {} (relation type {}) to reach status {}",
timeout, relationIndexName, relationTypeName, status);
return new RelationIndexStatusReport(false, relationIndexName, relationTypeName, actualStatus, status, t.elapsed());
}
Thread.sleep(poll.toMillis());
}
}