Package org.jpox.store.mapped.expression

Examples of org.jpox.store.mapped.expression.NullLiteral

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    {
    }
   
    public ScalarExpression newLiteral(QueryExpression qs, Object value)
    {
        return new NullLiteral(qs);
    }
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        return new NullLiteral(qs);
    }

    public ScalarExpression newScalarExpression(QueryExpression qs, LogicSetExpression te)
    {
        return new NullLiteral(qs);
    }
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                    ScalarExpression subExpr = subMapping.newScalarExpression(qs, table_expr_sub);
                    ScalarExpression schExpr =
                        (((DatastoreClass)schemaDataOption.getDatastoreContainerObject()).getIDMapping()).newScalarExpression(
                            qs,qs.getMainTableExpression());
                    qs.leftOuterJoin(subExpr, schExpr, table_expr_sub, true);
                    qs.andCondition(new NullLiteral(qs).eq(subExpr));
                }
            }

            // WHERE (object id) = ?
            JavaTypeMapping idMapping = ((DatastoreClass)schemaDataOption.getDatastoreContainerObject()).getIDMapping();
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            litType  = Boolean.class;
            litValue = bLiteral;
        }
        else if (p.parseNullLiteral())
        {
            return new NullLiteral(qs);
        }
        else
        {
            return null;
        }
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                 * WHERE THIS.ELEM_ID IS NULL
                 */
                QueryExpression nullStmt = getQueryForElement(candidateFullClassName,
                    storeMgr.getDatastoreClass(candidateFullClassName, clr), true, candidateAlias);
                ScalarExpression elemIdExpr = sourceMapping.newScalarExpression(nullStmt, nullStmt.getMainTableExpression());
                nullStmt.andCondition(new NullLiteral(nullStmt).eq(elemIdExpr));
                stmt.union(nullStmt);
            }

            return stmt;
        }
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                    ScalarExpression targetElementExpr =
                        targetElementMapping.newScalarExpression(stmt, stmt.getMainTableExpression());
                    targetSubElementTypeExpr = targetMapping.newScalarExpression(stmt, teTargetSubElementType);
                    stmt.leftOuterJoin(targetElementExpr,targetSubElementTypeExpr, teTargetSubElementType, true);
                    ScalarExpression seTargetSubElementType = targetMapping.newScalarExpression(targetQS, teTargetSubElementType);
                    stmt.andCondition(new NullLiteral(stmt).eq(seTargetSubElementType));
                }
            }
        }
    }
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        if ((withMetadata == null && hasSubClasses) ||
            (withMetadata != null && withMetadata.booleanValue()))
        {
            if (allowNull)
            {
                NullLiteral nullLtl = new NullLiteral(stmt);
                nullLtl.as(MetaDataStringLiteral.QUERY_META_DATA);
                stmt.selectScalarExpression(nullLtl);
            }
            else
            {
                String classname = pcClass;
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            }
            if (allowNulls)
            {
                // Allow for null value of discriminator
                ScalarExpression discrExpr = discriminatorMapping.newScalarExpression(stmt, discrimTableExpr);
                ScalarExpression discrVal = new NullLiteral(stmt);
                stmt.iorCondition(discrExpr.eq(discrVal));
            }
        }

        return stmt;
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            }
            else if (p.parseStringIgnoreCase("IS"))
            {
                if (p.parseStringIgnoreCase("NULL"))
                {
                    expr = expr.eq(new NullLiteral(qs));
                }
                else if (p.parseStringIgnoreCase("EMPTY"))
                {
                    ArrayList args = new ArrayList();
                    expr = expr.callMethod("isEmpty",args);
                }
                else if (p.parseStringIgnoreCase("NOT"))
                {
                    if (p.parseStringIgnoreCase("NULL"))
                    {
                        expr = expr.noteq(new NullLiteral(qs));
                    }
                    else if (p.parseStringIgnoreCase("EMPTY"))
                    {
                        ArrayList args = new ArrayList();
                        expr = expr.callMethod("isEmpty",args).not();
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                    paramExpr.checkForTypeAssignability();
                    return paramExpr;
                }
                else
                {
                    return new NullLiteral(qs);
                }
            }

            if (!executionCompile)
            {
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Related Classes of org.jpox.store.mapped.expression.NullLiteral

  • org.jpox.store.mapped.mapping.NullMapping
  • org.jpox.store.rdbms.query.DiscriminatorIteratorStatement
  • org.jpox.store.rdbms.query.JavaQueryCompiler
  • org.jpox.store.rdbms.query.JDOQLQueryCompiler
  • org.jpox.store.rdbms.query.JPQLQueryCompiler
  • org.jpox.store.rdbms.query.UnionIteratorStatement
  • org.jpox.store.rdbms.RDBMSStoreHelper
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