Examples with UserVersionType org.hibernate.usertype.UserVersionType used on opensource projects

Example 1 with UserVersionType

use of org.hibernate.usertype.UserVersionType in project hibernate-orm by hibernate.

the class HqlSqlWalker method prepareVersioned.

@Override
protected void prepareVersioned(AST updateNode, AST versioned) throws SemanticException {
    UpdateStatement updateStatement = (UpdateStatement) updateNode;
    FromClause fromClause = updateStatement.getFromClause();
    if (versioned != null) {
        // Make sure that the persister is versioned
        Queryable persister = fromClause.getFromElement().getQueryable();
        if (!persister.isVersioned()) {
            throw new SemanticException("increment option specified for update of non-versioned entity");
        }
        VersionType versionType = persister.getVersionType();
        if (versionType instanceof UserVersionType) {
            throw new SemanticException("user-defined version types not supported for increment option");
        }
        AST eq = getASTFactory().create(HqlSqlTokenTypes.EQ, "=");
        AST versionPropertyNode = generateVersionPropertyNode(persister);
        eq.setFirstChild(versionPropertyNode);
        AST versionIncrementNode = null;
        if (isTimestampBasedVersion(versionType)) {
            versionIncrementNode = getASTFactory().create(HqlSqlTokenTypes.PARAM, "?");
            ParameterSpecification paramSpec = new VersionTypeSeedParameterSpecification(versionType);
            ((ParameterNode) versionIncrementNode).setHqlParameterSpecification(paramSpec);
            parameters.add(0, paramSpec);
        } else {
            // Not possible to simply re-use the versionPropertyNode here as it causes
            // OOM errors due to circularity :(
            versionIncrementNode = getASTFactory().create(HqlSqlTokenTypes.PLUS, "+");
            versionIncrementNode.setFirstChild(generateVersionPropertyNode(persister));
            versionIncrementNode.addChild(getASTFactory().create(HqlSqlTokenTypes.IDENT, "1"));
        }
        eq.addChild(versionIncrementNode);
        evaluateAssignment(eq, persister, 0);
        AST setClause = updateStatement.getSetClause();
        AST currentFirstSetElement = setClause.getFirstChild();
        setClause.setFirstChild(eq);
        eq.setNextSibling(currentFirstSetElement);
    }
}