Package org.apache.cayenne.ejbql

Examples of org.apache.cayenne.ejbql.EJBQLException

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        // also note that the code below is mostly copy/paste from MEMBER OF method ...
        // maybe there's enough commonality in building correlated subqueries to make it
        // reusable???

        if (expression.getChildrenCount() != 1) {
            throw new EJBQLException("SIZE must have exactly one child, got: "
                    + expression.getChildrenCount());
        }

        if (!(expression.getChild(0) instanceof EJBQLPath)) {
            throw new EJBQLException(
                    "First child of SIZE must be a collection path, got: "
                            + expression.getChild(1));
        }

        EJBQLPath path = (EJBQLPath) expression.getChild(0);
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        // * Join must be transled as a part of the subquery WHERE clause instead of
        // FROM.
        // * A condition is added: subquery_root_id = LHS_memberof

        if (expression.getChildrenCount() != 2) {
            throw new EJBQLException("MEMBER OF must have exactly two children, got: "
                    + expression.getChildrenCount());
        }

        if (!(expression.getChild(1) instanceof EJBQLPath)) {
            throw new EJBQLException(
                    "Second child of the MEMBER OF must be a collection path, got: "
                            + expression.getChild(1));
        }

        EJBQLPath path = (EJBQLPath) expression.getChild(1);
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        EJBQLExpressionVisitor childVisitor = new EJBQLPathTranslator(context) {

            @Override
            protected void appendMultiColumnPath(EJBQLMultiColumnOperand operand) {
                throw new EJBQLException("Can't order on multi-column paths or objects");
            }
        };
        expression.visit(childVisitor);
        return false;
    }
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        EJBQLExpressionVisitor childVisitor = new EJBQLPathTranslator(context) {

            @Override
            protected void appendMultiColumnPath(EJBQLMultiColumnOperand operand) {
                throw new EJBQLException(
                        "Can't GROUP BY on multi-column paths or objects");
            }
           
            @Override
            public boolean visitIdentificationVariable(EJBQLExpression expression) {
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                // check multicolumn match condition and undo op insertion and append it
                // from scratch if needed
                if (multiColumnOperands != null) {

                    if (multiColumnOperands.size() != 2) {
                        throw new EJBQLException(
                                "Invalid multi-column equals expression. Expected 2 multi-column operands, got "
                                        + multiColumnOperands.size());
                    }

                    context.trim(2);
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                // check multicolumn match condition and undo op insertion and append it
                // from scratch if needed
                if (multiColumnOperands != null) {

                    if (multiColumnOperands.size() != 2) {
                        throw new EJBQLException(
                                "Invalid multi-column equals expression. Expected 2 multi-column operands, got "
                                        + multiColumnOperands.size());
                    }

                    context.trim(3);
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    public boolean visitIdentificationVariable(EJBQLExpression expression) {
        // this is a match on a variable, like "x = :x"

        ClassDescriptor descriptor = context.getEntityDescriptor(expression.getText());
        if (descriptor == null) {
            throw new EJBQLException("Invalid identification variable: "
                    + expression.getText());
        }

        DbEntity table = descriptor.getEntity().getDbEntity();
        String alias = context.getTableAlias(expression.getText(), table
                .getFullyQualifiedName());

        Collection<DbAttribute> pks = table.getPrimaryKeys();

        if (pks.size() == 1) {
            DbAttribute pk = pks.iterator().next();
            context.append(' ').append(alias).append('.').append(pk.getName());
        }
        else {
            throw new EJBQLException(
                    "Multi-column PK to-many matches are not yet supported.");
        }
        return false;
    }
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            try {
                value = new Integer(text);
            }
            catch (NumberFormatException nfex) {
                throw new EJBQLException("Invalid integer: " + expression.getText());
            }

            String var = context.bindParameter(value);
            context.append(" #bind($").append(var).append(" 'INTEGER')");
        }
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            try {
                value = new BigDecimal(text);
            }
            catch (NumberFormatException nfex) {
                throw new EJBQLException("Invalid decimal: " + expression.getText());
            }

            String var = context.bindParameter(value);
            context.append(" #bind($").append(var).append(" 'DECIMAL')");
        }
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            String id = translator.idPath;
            if (id != null) {

                ClassDescriptor descriptor = context.getEntityDescriptor(id);
                if (descriptor == null) {
                    throw new EJBQLException("Unmapped id variable: " + id);
                }
                String pathChunk = translator.lastPathComponent;

                Property property = descriptor.getProperty(pathChunk);
                if (property instanceof AttributeProperty) {
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Related Classes of org.apache.cayenne.ejbql.EJBQLException

  • org.apache.cayenne.access.jdbc.EJBQLAggregateColumnTranslator$FieldPathTranslator
  • org.apache.cayenne.access.jdbc.EJBQLConditionTranslator
  • org.apache.cayenne.access.jdbc.EJBQLDbPathTranslator
  • org.apache.cayenne.access.jdbc.EJBQLFromTranslator
  • org.apache.cayenne.access.jdbc.EJBQLGroupByTranslator
  • org.apache.cayenne.access.jdbc.EJBQLJoinAppender
  • org.apache.cayenne.access.jdbc.EJBQLMultiColumnOperand$ObjectMultiColumnOperand
  • org.apache.cayenne.access.jdbc.EJBQLMultiColumnOperand$PathMultiColumnOperand
  • org.apache.cayenne.access.jdbc.EJBQLOrderByTranslator
  • org.apache.cayenne.access.jdbc.EJBQLPathTranslator
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