Examples with ExpressionNode com.yahoo.searchlib.expression.ExpressionNode used on opensource projects

Example 1 with ExpressionNode

use of com.yahoo.searchlib.expression.ExpressionNode in project vespa by vespa-engine.

the class Group method clone.

@Override
public Group clone() {
    Group obj = (Group) super.clone();
    if (id != null) {
        obj.id = (ResultNode) id.clone();
    }
    obj.aggregationResults = new ArrayList<AggregationResult>();
    for (AggregationResult result : aggregationResults) {
        obj.aggregationResults.add(result.clone());
    }
    obj.orderByIdx = new ArrayList<Integer>();
    for (Integer idx : orderByIdx) {
        obj.orderByIdx.add(idx);
    }
    obj.orderByExp = new ArrayList<ExpressionNode>();
    RefResolver resolver = new RefResolver(obj);
    for (ExpressionNode exp : orderByExp) {
        exp = exp.clone();
        exp.select(REF_LOCATOR, resolver);
        obj.orderByExp.add(exp);
    }
    obj.children = new ArrayList<Group>();
    for (Group child : children) {
        obj.children.add(child.clone());
    }
    return obj;
}

Example 2 with ExpressionNode

use of com.yahoo.searchlib.expression.ExpressionNode in project vespa by vespa-engine.

the class Group method executeOrderBy.

private void executeOrderBy() {
    for (ExpressionNode node : orderByExp) {
        node.prepare();
        node.execute();
    }
}

Example 3 with ExpressionNode

use of com.yahoo.searchlib.expression.ExpressionNode in project vespa by vespa-engine.

the class Group method postMerge.

/**
 * <p>After merging, this method will prune all levels so that they do not exceed the configured maximum number of
 * groups per level.</p>
 *
 * @param levels       The specs of all grouping levels.
 * @param firstLevel   The first level to merge.
 * @param currentLevel The current level.
 */
public void postMerge(List<GroupingLevel> levels, int firstLevel, int currentLevel) {
    if (currentLevel >= firstLevel) {
        for (AggregationResult result : aggregationResults) {
            result.postMerge();
        }
        for (ExpressionNode result : orderByExp) {
            result.execute();
        }
    }
    if (currentLevel < levels.size()) {
        int maxGroups = (int) levels.get(currentLevel).getMaxGroups();
        for (Group group : children) {
            group.executeOrderBy();
        }
        if (maxGroups >= 0 && children.size() > maxGroups) {
            // prune groups
            sortChildrenByRank();
            children = children.subList(0, maxGroups);
            sortChildrenById();
        }
        for (Group group : children) {
            group.postMerge(levels, firstLevel, currentLevel + 1);
        }
    }
}

Example 4 with ExpressionNode

use of com.yahoo.searchlib.expression.ExpressionNode in project vespa by vespa-engine.

the class ExpressionConverter method toSubNode.

private MultiArgFunctionNode toSubNode(Iterable<GroupingExpression> lst) {
    MultiArgFunctionNode ret = new AddFunctionNode();
    int i = 0;
    for (GroupingExpression exp : lst) {
        ExpressionNode node = toExpressionNode(exp);
        if (++i > 1) {
            node = new NegateFunctionNode(node);
        }
        ret.addArg(node);
    }
    return ret;
}

Example 5 with ExpressionNode

use of com.yahoo.searchlib.expression.ExpressionNode in project vespa by vespa-engine.

the class Group method onDeserialize.

@Override
protected void onDeserialize(Deserializer buf) {
    super.onDeserialize(buf);
    id = (ResultNode) deserializeOptional(buf);
    rank = buf.getDouble(null);
    orderByIdx.clear();
    int orderByCount = buf.getInt(null);
    for (int i = 0; i < orderByCount; i++) {
        orderByIdx.add(buf.getInt(null));
    }
    int numResults = buf.getInt(null);
    for (int i = 0; i < numResults; i++) {
        AggregationResult e = (AggregationResult) deserializeOptional(buf);
        aggregationResults.add(e);
    }
    int numExpressionResults = buf.getInt(null);
    RefResolver resolver = new RefResolver(this);
    for (int i = 0; i < numExpressionResults; i++) {
        ExpressionNode exp = (ExpressionNode) deserializeOptional(buf);
        exp.select(REF_LOCATOR, resolver);
        orderByExp.add(exp);
    }
    int numGroups = buf.getInt(null);
    for (int i = 0; i < numGroups; i++) {
        Group g = new Group();
        g.deserializeWithId(buf);
        children.add(g);
    }
    tag = buf.getInt(null);
}