Package org.apache.jackrabbit.oak.query.xpath.Expression

Examples of org.apache.jackrabbit.oak.query.xpath.Expression.OrCondition

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        }
        if (where == null) {
            return this;
        }
        if (where instanceof OrCondition) {
            OrCondition or = (OrCondition) where;
            if (or.getCommonLeftPart() != null) {
                // @x = 1 or @x = 2
                // is automatically converted to
                // @x in (1, 2)
                // within the query engine
            } else {
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        }
        if (where == null) {
            return this;
        }
        if (where instanceof OrCondition) {
            OrCondition or = (OrCondition) where;
            if (or.getCommonLeftPart() != null) {
                // @x = 1 or @x = 2
                // is automatically converted to
                // @x in (1, 2)
                // within the query engine
            } else if (or.left instanceof Contains && or.right instanceof Contains) {
                // do not optimize "contains"
            } else {
                // conditions of type               
                // @x = 1 or @y = 2
                // or similar are converted to
                // (@x = 1) union (@y = 2)
                Statement s1 = new Statement();
                s1.columnSelector = columnSelector;
                s1.selectors = selectors;
                s1.columnList = columnList;
                s1.where = or.left;
                Statement s2 = new Statement();
                s2.columnSelector = columnSelector;
                s2.selectors = selectors;
                s2.columnList = columnList;
                s2.where = or.right;
                s2.xpathQuery = xpathQuery;
                return new UnionStatement(s1.optimize(), s2.optimize());
            }
        } else if (where instanceof AndCondition) {
            // conditions of type
            // @a = 1 and (@x = 1 or @y = 2)
            // are automatically converted to
            // (@a = 1 and @x = 1) union (@a = 1 and @y = 2)
            AndCondition and = (AndCondition) where;
            if (and.left instanceof OrCondition && !(and.right instanceof OrCondition)) {
                // swap left and right
                and = new AndCondition(and.right, and.left);
            }
            if (and.right instanceof OrCondition) {
                OrCondition or = (OrCondition) and.right;
                if (or.getCommonLeftPart() != null) {
                    // @x = 1 or @x = 2
                    // is automatically converted to
                    // @x in (1, 2)
                    // within the query engine               
                } else if (or.left instanceof Contains && or.right instanceof Contains) {
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        return union;
    }
   
    private static void addToUnionList(Expression condition,  ArrayList<Expression> unionList) {
        if (condition instanceof OrCondition) {
            OrCondition or = (OrCondition) condition;
            if (or.getCommonLeftPart() != null) {
                // @x = 1 or @x = 2
                // is automatically converted to
                // @x in (1, 2)
                // within the query engine
            } else if (or.left instanceof Contains && or.right instanceof Contains) {
                // do not optimize "contains"
            } else {
                // conditions of type               
                // @x = 1 or @y = 2
                // or similar are converted to
                // (@x = 1) union (@y = 2)
                addToUnionList(or.left, unionList);
                addToUnionList(or.right, unionList);
                return;
            }
        } else if (condition instanceof AndCondition) {
            // conditions of type
            // @a = 1 and (@x = 1 or @y = 2)
            // are automatically converted to
            // (@a = 1 and @x = 1) union (@a = 1 and @y = 2)
            AndCondition and = (AndCondition) condition;
            and = and.pullOrRight();
            if (and.right instanceof OrCondition) {
                OrCondition or = (OrCondition) and.right;
                if (or.getCommonLeftPart() != null) {
                    // @x = 1 or @x = 2
                    // is automatically converted to
                    // @x in (1, 2)
                    // within the query engine               
                } else if (or.left instanceof Contains && or.right instanceof Contains) {
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        }
        if (where == null) {
            return this;
        }
        if (where instanceof OrCondition) {
            OrCondition or = (OrCondition) where;
            if (or.getCommonLeftPart() != null) {
                // @x = 1 or @x = 2
                // is automatically converted to
                // @x in (1, 2)
                // within the query engine
            } else {
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    private static void addToUnionList(Expression condition,  ArrayList<Expression> unionList) {
        if (condition.containsFullTextCondition()) {
            // do not use union
        } else if (condition instanceof OrCondition) {
            OrCondition or = (OrCondition) condition;
            // conditions of type               
            // @x = 1 or @y = 2
            // or similar are converted to
            // (@x = 1) union (@y = 2)
            addToUnionList(or.left, unionList);
            addToUnionList(or.right, unionList);
            return;
        } else if (condition instanceof AndCondition) {
            // conditions of type
            // @a = 1 and (@x = 1 or @y = 2)
            // are automatically converted to
            // (@a = 1 and @x = 1) union (@a = 1 and @y = 2)
            AndCondition and = (AndCondition) condition;
            and = and.pullOrRight();
            if (and.right instanceof OrCondition) {
                OrCondition or = (OrCondition) and.right;
                // same as above, but with the added "and"
                addToUnionList(new AndCondition(and.left, or.left), unionList);
                addToUnionList(new AndCondition(and.left, or.right), unionList);
                return;
            }
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        }
        if (where == null) {
            return this;
        }
        if (where instanceof OrCondition) {
            OrCondition or = (OrCondition) where;
            Statement s1 = new Statement();
            s1.columnSelector = columnSelector;
            s1.selectors = selectors;
            s1.columnList = columnList;
            s1.where = or.left;
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Related Classes of org.apache.jackrabbit.oak.query.xpath.Expression.OrCondition

  • org.apache.jackrabbit.oak.query.xpath.Statement
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