/** */ public Expression generateExpression(GenerationContext context) { //create builder, and add Class baseClass = context.getBaseQueryClass(); ExpressionBuilder builder = new ExpressionBuilder(baseClass); Expression whereClause = builder.getParameter(getParameterName(), getType()); return whereClause; }
/** * Build the primary key expression for the secondary table. */ public Expression buildPrimaryKeyExpression(DatabaseTable table) throws DescriptorException { if (getDescriptor().getTables().firstElement().equals(table)) { return getPrimaryKeyExpression(); } Map keyMapping = (Map)getDescriptor().getAdditionalTablePrimaryKeyFields().get(table); if (keyMapping == null) { throw DescriptorException.multipleTablePrimaryKeyNotSpecified(getDescriptor()); } ExpressionBuilder builder = new ExpressionBuilder(); Expression expression = null; for (Iterator primaryKeyEnum = keyMapping.values().iterator(); primaryKeyEnum.hasNext();) { DatabaseField field = (DatabaseField)primaryKeyEnum.next(); expression = (builder.getField(field).equal(builder.getParameter(field))).and(expression); } return expression; }
protected void initializeSelectionCriteria(AbstractSession session) { Expression exp1; Expression exp2; Expression expression; Expression criteria = null; Enumeration referenceKeysEnum; Enumeration sourceKeysEnum; ExpressionBuilder base = new ExpressionBuilder(); TableExpression table = (TableExpression)base.getTable(getReferenceTable()); referenceKeysEnum = getReferenceKeyFields().elements(); sourceKeysEnum = getSourceKeyFields().elements(); for (; referenceKeysEnum.hasMoreElements();) { DatabaseField referenceKey = (DatabaseField)referenceKeysEnum.nextElement(); DatabaseField sourceKey = (DatabaseField)sourceKeysEnum.nextElement(); exp1 = table.getField(referenceKey); exp2 = base.getParameter(sourceKey); expression = exp1.equal(exp2); if (criteria == null) { criteria = expression; } else { criteria = expression.and(criteria); } } setSelectionCriteria(criteria); }
/** * INTERNAL: * Returns an expression that will be used for both the update and * delete where clause */ protected Expression buildExpression() { ExpressionBuilder builder = new ExpressionBuilder(); return builder.getField(getWriteLockField()).equal(builder.getParameter(getWriteLockField())); }