本文整理了Java中org.modeshape.jcr.api.query.Query.explain
方法的一些代码示例,展示了Query.explain
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Query.explain
方法的具体详情如下:
包路径:org.modeshape.jcr.api.query.Query
类名称:Query
方法名:explain
[英]Generates a plan for the this query and returns a QueryResult
object that contains no results (nodes or rows) but does have a query plan.
If this Query
contains a variable (see javax.jcr.query.qom.BindVariableValue) which has not been bound to a value (see Query#bindValue) then this method throws an InvalidQueryException
.
[中]为此查询生成一个计划,并返回一个QueryResult
对象,该对象不包含任何结果(节点或行),但有一个查询计划。
如果这个Query
包含一个变量(请参见javax.jcr.query.qom.BindVariableValue),该变量尚未绑定到一个值(请参见query#bindValue),那么这个方法会抛出一个InvalidQueryException
。
代码示例来源:origin: com.thinkbiganalytics.kylo/kylo-metadata-modeshape
public static String explainPlain(Session session, String queryExpression) throws RepositoryException {
Query query = session.getWorkspace().getQueryManager().createQuery(queryExpression, "JCR-SQL2");
org.modeshape.jcr.api.query.Query msQuery = (org.modeshape.jcr.api.query.Query)query;
// Get the query plan without executing it ...
org.modeshape.jcr.api.query.QueryResult result = msQuery.explain();
String plan = result.getPlan();
return plan;
}
代码示例来源:origin: com.thinkbiganalytics.kylo/kylo-metadata-modeshape
public List<T> findWithExplainPlan(String queryExpression) {
try {
org.modeshape.jcr.api.query.Query query = (org.modeshape.jcr.api.query.Query) getSession().getWorkspace().getQueryManager().createQuery(queryExpression, "JCR-SQL2");
org.modeshape.jcr.api.query.QueryResult result = query.explain();
String plan = result.getPlan();
log.info(plan);
return find(queryExpression);
} catch (RepositoryException e) {
throw new MetadataRepositoryException("Failure while finding entity ", e);
}
}
代码示例来源:origin: org.modeshape/modeshape-jdbc-local
@Override
public String explain( String query,
String language ) throws RepositoryException {
logger.trace("Explaining query: {0}", query);
// Create the query ...
final org.modeshape.jcr.api.query.Query jcrQuery = (org.modeshape.jcr.api.query.Query)getLocalSession().getSession().getWorkspace().getQueryManager().createQuery(query,
language);
return jcrQuery.explain().getPlan();
}
代码示例来源:origin: ModeShape/modeshape
@Override
public String explain( String query,
String language ) throws RepositoryException {
logger.trace("Explaining query: {0}", query);
// Create the query ...
final org.modeshape.jcr.api.query.Query jcrQuery = (org.modeshape.jcr.api.query.Query)getLocalSession().getSession().getWorkspace().getQueryManager().createQuery(query,
language);
return jcrQuery.explain().getPlan();
}
代码示例来源:origin: ModeShape/modeshape
bindExtraVariables(uriInfo, session.getValueFactory(), query);
org.modeshape.jcr.api.query.QueryResult result = query.explain();
String plan = result.getPlan();
return new RestQueryPlanResult(plan, statement, language, query.getAbstractQueryModelRepresentation());
代码示例来源:origin: ModeShape/modeshape
@FixFor( "MODE-1901" )
@Test
public void shouldExplainQueryWithoutExecutingQuery() throws RepositoryException {
String sql = "SELECT * FROM [nt:file]";
org.modeshape.jcr.api.query.Query query = session.getWorkspace().getQueryManager().createQuery(sql, Query.JCR_SQL2);
org.modeshape.jcr.api.query.QueryResult result = query.explain();
validateQuery().rowCount(0).warnings(0).onlyQueryPlan().validate(query, result);
}
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