Remove extra ON DELETE CASCADE from artifact_branches table.

Author: EricWittmann

app/src/main/resources/io/apicurio/registry/storage/impl/sql/h2.ddl

@@ -91,6 +91,6 @@ CREATE INDEX IDX_version_comments_1 ON version_comments(createdBy);
 -- This table is defined way down here because it has a FK to the artifacts table *and* the versions table
 CREATE TABLE artifact_branches (groupId VARCHAR(512) NOT NULL, artifactId VARCHAR(512) NOT NULL, branchId VARCHAR(256) NOT NULL, branchOrder INT NOT NULL, version VARCHAR(256) NOT NULL);
 ALTER TABLE artifact_branches ADD PRIMARY KEY (groupId, artifactId, branchId, branchOrder);
-ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_1 FOREIGN KEY (groupId, artifactId) REFERENCES artifacts(groupId, artifactId) ON DELETE CASCADE;
+ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_1 FOREIGN KEY (groupId, artifactId) REFERENCES artifacts(groupId, artifactId);
 ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_2 FOREIGN KEY (groupId, artifactId, version) REFERENCES versions(groupId, artifactId, version) ON DELETE CASCADE;
 CREATE INDEX IDX_artifact_branches_1 ON artifact_branches(groupId, artifactId, branchId, branchOrder);

app/src/main/resources/io/apicurio/registry/storage/impl/sql/postgresql.ddl

@@ -91,6 +91,6 @@ CREATE INDEX IDX_version_comments_1 ON version_comments(createdBy);
 -- This table is defined way down here because it has a FK to the artifacts table *and* the versions table
 CREATE TABLE artifact_branches (groupId VARCHAR(512) NOT NULL, artifactId VARCHAR(512) NOT NULL, branchId VARCHAR(256) NOT NULL, branchOrder INT NOT NULL, version VARCHAR(256) NOT NULL);
 ALTER TABLE artifact_branches ADD PRIMARY KEY (groupId, artifactId, branchId, branchOrder);
-ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_1 FOREIGN KEY (groupId, artifactId) REFERENCES artifacts(groupId, artifactId) ON DELETE CASCADE;
+ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_1 FOREIGN KEY (groupId, artifactId) REFERENCES artifacts(groupId, artifactId);
 ALTER TABLE artifact_branches ADD CONSTRAINT FK_artifact_branches_2 FOREIGN KEY (groupId, artifactId, version) REFERENCES versions(groupId, artifactId, version) ON DELETE CASCADE;
 CREATE INDEX IDX_artifact_branches_1 ON artifact_branches(groupId, artifactId, branchId, branchOrder);