Class QueryTreeBuilder<TQuery>

This class should be used when there is a builder for each type of node.

The type of node may be defined in 2 different ways: - by the field name, when the node implements the IFieldableNode interface - by its class, it keeps checking the class and all the interfaces and classes this class implements/extends until it finds a builder for that class/interface

This class always check if there is a builder for the field name before it checks for the node class. So, field name builders have precedence over class builders.

When a builder is found for a node, it's called and the node is passed to the builder. If the returned built object is not null, it's tagged on the node using the tag QUERY_TREE_BUILDER_TAGID.

The children are usually built before the parent node. However, if a builder associated to a node is an instance of QueryTreeBuilder<TQuery>, the node is delegated to this builder and it's responsible to build the node and its children.

IQueryBuilder<TQuery>

Inheritance

System.Object

QueryTreeBuilder

QueryTreeBuilder<TQuery>

StandardQueryTreeBuilder

Implements

IQueryBuilder<TQuery>

Inherited Members

QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID

Namespace: Lucene.Net.QueryParsers.Flexible.Core.Builders

Assembly: Lucene.Net.QueryParser.dll

Syntax

public class QueryTreeBuilder<TQuery> : QueryTreeBuilder, IQueryBuilder<TQuery>

Type Parameters

Name	Description
TQuery

Constructors

QueryTreeBuilder()

QueryTreeBuilder<TQuery> constructor.

Declaration

public QueryTreeBuilder()

Methods

Build(IQueryNode)

Builds some kind of object from a query tree. Each node in the query tree is built using an specific builder associated to it.

Declaration

public virtual TQuery Build(IQueryNode queryNode)

Parameters

Type	Name	Description
IQueryNode	queryNode	the query tree root node

Returns

Type	Description
TQuery	the built object

Exceptions

Type	Condition
QueryNodeException	if some node builder throws a QueryNodeException or if there is a node which had no builder associated to it

SetBuilder(String, IQueryBuilder<TQuery>)

Associates a field name with a builder.

Declaration

public virtual void SetBuilder(string fieldName, IQueryBuilder<TQuery> builder)

Parameters

Type	Name	Description
System.String	fieldName	the field name
IQueryBuilder<TQuery>	builder	the builder to be associated

SetBuilder(Type, IQueryBuilder<TQuery>)

Associates a class (that implements IQueryNode) with a builder

Declaration

public virtual void SetBuilder(Type queryNodeClass, IQueryBuilder<TQuery> builder)

Parameters

Type	Name	Description
Type	queryNodeClass	The type (a class that implements IQueryNode)
IQueryBuilder<TQuery>	builder	the builder to be associated

Implements

IQueryBuilder<TQuery>