Example usage for org.apache.lucene.queryparser.flexible.core.nodes QueryNode getChildren

Introduction

In this page you can find the example usage for org.apache.lucene.queryparser.flexible.core.nodes QueryNode getChildren.

Prototype

public List<QueryNode> getChildren();

Source Link

Document

get Children nodes

Usage

From source file:com.sindicetech.siren.qparser.keyword.nodes.TwigQueryNode.java

License:Open Source License

private CharSequence doGetField(final List<QueryNode> children) {
    if (children != null) {
        for (final QueryNode child : children) {
            if (child instanceof FieldableNode) {
                return ((FieldableNode) child).getField();
            } else if (child instanceof TwigQueryNode) {
                return ((TwigQueryNode) child).getField();
            }//from   w  ww.  j a va 2  s  . co  m
            final CharSequence field = this.doGetField(child.getChildren());
            if (field != null) {
                return field;
            }
        }
    }
    return null;
}

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From source file:com.sindicetech.siren.qparser.keyword.nodes.TwigQueryNode.java

License:Open Source License

private void doSetField(final List<QueryNode> children, final CharSequence fieldName) {
    if (children != null) {
        for (final QueryNode child : children) {
            this.doSetField(child.getChildren(), fieldName);
            if (child instanceof FieldableNode) {
                ((FieldableNode) child).setField(fieldName);
            } else if (child instanceof TwigQueryNode) {
                ((TwigQueryNode) child).setField(fieldName);
            }// w  w w.  ja va  2 s  .  c  o  m
        }
    }
}

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From source file:com.sindicetech.siren.qparser.keyword.processors.DatatypeProcessor.java

License:Open Source License

@Override
protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
    final QueryConfigHandler conf = this.getQueryConfigHandler();

    // If the current node is a datatype query node, validate the datatype and assign it to its child
    if (node instanceof DatatypeQueryNode) {
        final Map<String, Analyzer> dtAnalyzers = conf.get(KeywordConfigurationKeys.DATATYPES_ANALYZERS);
        final DatatypeQueryNode dt = (DatatypeQueryNode) node;
        String datatype = dt.getDatatype();

        // check if the datatype is correctly registered
        if (dtAnalyzers == null) {
            throw new IllegalArgumentException("KeywordConfigurationKeys.DATAYPES_ANALYZERS "
                    + "should be set on the ExtendedKeywordQueryConfigHandler");
        }/*from www  .ja  v a  2  s .  c om*/
        if (!dtAnalyzers.containsKey(datatype)) {
            throw new IllegalArgumentException("Unknown datatype: [" + datatype + "]");
        }
        if (dtAnalyzers.get(datatype) == null) {
            throw new IllegalArgumentException("Analyzer of datatype [" + datatype + "] cannot be null.");
        }

        // transfer the datatype to its child
        dt.getChild().setTag(DatatypeQueryNode.DATATYPE_TAGID, datatype);
    }
    // If the current node is a twig query node, assign the json:field datatype to the root, and assign the default
    // or the tagged datatype to the child
    else if (node instanceof TwigQueryNode) {
        final TwigQueryNode twig = (TwigQueryNode) node;
        if (twig.getTag(DatatypeQueryNode.DATATYPE_TAGID) == null) {
            twig.getChild().setTag(DatatypeQueryNode.DATATYPE_TAGID, this.getDefaultDatatype(conf));
        } else {
            twig.getChild().setTag(DatatypeQueryNode.DATATYPE_TAGID, this.getDatatype(conf, node));
        }
        twig.getRoot().setTag(DatatypeQueryNode.DATATYPE_TAGID, JSONDatatype.JSON_FIELD);
    }
    // in any other cases, if the node is not a leaf node, transfer the datatype to its children
    else if (!node.isLeaf()) {
        for (final QueryNode child : node.getChildren()) {
            child.setTag(DatatypeQueryNode.DATATYPE_TAGID, this.getDatatype(conf, node));
        }
    }

    return node;
}

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From source file:com.sindicetech.siren.qparser.keyword.processors.GroupQueryNodeProcessor.java

License:Open Source License

private void readTree(final QueryNode node) throws QueryNodeException {

    if (node instanceof BooleanQueryNode) {
        final List<QueryNode> children = node.getChildren();

        if (children != null && children.size() > 0) {

            for (int i = 0; i < children.size() - 1; i++) {
                this.readTree(children.get(i));
            }//from   w w w  .jav  a  2 s .  com

            this.processNode(node);
            this.readTree(children.get(children.size() - 1));

        } else {
            this.processNode(node);
        }

    } else {
        this.processNode(node);
    }

}

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From source file:com.sindicetech.siren.qparser.keyword.processors.QueryTypeProcessor.java

License:Open Source License

@Override
protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
    // If the current node is a group query node, check the query type and assign it to its children
    if (node instanceof GroupQueryNode) {
        GroupQueryNode groupQueryNode = (GroupQueryNode) node;
        String queryType = null;//  w w w  .  j  a  va  2s  .c om

        if (node instanceof NodeGroupQueryNode) {
            queryType = NODE_QUERYTYPE;
        } else if (node instanceof SpanGroupQueryNode) {
            queryType = SPAN_QUERYTYPE;
        } else {
            throw new QueryNodeException(new MessageImpl("Invalid GroupQueryNode received",
                    node.toQueryString(new EscapeQuerySyntaxImpl())));
        }

        // transfer the query type to its child
        groupQueryNode.getChild().setTag(QUERYTYPE_TAG, queryType);
    }
    // in any other cases, if the node is not a leaf node, transfer the query type to its children
    else if (!node.isLeaf()) {
        if (node.getTag(QUERYTYPE_TAG) != null) {
            for (final QueryNode child : node.getChildren()) {
                child.setTag(QUERYTYPE_TAG, node.getTag(QUERYTYPE_TAG));
            }
        }
    }

    return node;
}

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From source file:org.sindice.siren.qparser.keyword.builders.DatatypeQueryNodeBuilder.java

License:Apache License

public Query build(final QueryNode queryNode) throws QueryNodeException {
    final DatatypeQueryNode dtNode = (DatatypeQueryNode) queryNode;
    final QueryNode child = dtNode.getChild();

    assert queryNode.getChildren().size() == 1;

    final Query query = (Query) child.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
    this.setDatatype(child, dtNode.getDatatype());
    return query;
}

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From source file:org.sindice.siren.qparser.keyword.builders.DatatypeQueryNodeBuilder.java

License:Apache License

/**
 * Sets the given datatype on each descendant of the {@link DatatypeQueryNode}
 *//*from  ww  w. j  av  a  2 s .c  o  m*/
private void setDatatype(final QueryNode node, final String datatype) {
    final Query query = (Query) node.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
    if (query instanceof NodePrimitiveQuery) {
        ((NodePrimitiveQuery) query).setDatatype(datatype);
    }
    if (node.isLeaf()) {
        return;
    }
    for (final QueryNode child : node.getChildren()) {
        this.setDatatype(child, datatype);
    }
}

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