CAY-2406 Add prefetch-related API to SQLSelect
Project: http://git-wip-us.apache.org/repos/asf/cayenne/repo Commit: http://git-wip-us.apache.org/repos/asf/cayenne/commit/9183314a Tree: http://git-wip-us.apache.org/repos/asf/cayenne/tree/9183314a Diff: http://git-wip-us.apache.org/repos/asf/cayenne/diff/9183314a Branch: refs/heads/master Commit: 9183314a9e1d361e14c13cd5f208a71533b5fe8e Parents: 90e5273 Author: Maxim Petrusevich <maks1...@gmail.com> Authored: Wed Feb 14 10:30:37 2018 +0300 Committer: Maxim Petrusevich <maks1...@gmail.com> Committed: Wed Feb 14 10:30:37 2018 +0300 ---------------------------------------------------------------------- .../java/org/apache/cayenne/query/SQLTemplate.java | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cayenne/blob/9183314a/cayenne-server/src/main/java/org/apache/cayenne/query/SQLTemplate.java ---------------------------------------------------------------------- diff --git a/cayenne-server/src/main/java/org/apache/cayenne/query/SQLTemplate.java b/cayenne-server/src/main/java/org/apache/cayenne/query/SQLTemplate.java index 5a84322..c86bb00 100644 --- a/cayenne-server/src/main/java/org/apache/cayenne/query/SQLTemplate.java +++ b/cayenne-server/src/main/java/org/apache/cayenne/query/SQLTemplate.java @@ -19,6 +19,7 @@ package org.apache.cayenne.query; +import org.apache.cayenne.CayenneRuntimeException; import org.apache.cayenne.access.QueryEngine; import org.apache.cayenne.map.DataMap; import org.apache.cayenne.map.DbEntity; @@ -34,7 +35,6 @@ import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; -import java.util.TreeSet; import java.util.function.Function; import java.util.stream.Stream; @@ -502,9 +502,24 @@ public class SQLTemplate extends AbstractQuery implements ParameterizedQuery { * @since 4.0 */ public void addPrefetch(PrefetchTreeNode prefetchElement) { + if (hasDisjointNode(prefetchElement)) { + throw new CayenneRuntimeException("This query supports only 'joint' and 'disjointById' prefetching semantics."); + } metaData.mergePrefetch(prefetchElement); } + private boolean hasDisjointNode(PrefetchTreeNode prefetchElement) { + if (prefetchElement.isDisjointPrefetch()) { + return true; + } + for (PrefetchTreeNode child : prefetchElement.getChildren()) { + if (hasDisjointNode(child)) { + return true; + } + } + return false; + } + /** * @since 1.2 */
