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
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
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

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QueryTreeBuilder()

QueryTreeBuilder<TQuery> constructor.

Declaration
public QueryTreeBuilder()

Methods

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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
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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
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SetBuilder(Type, IQueryBuilder<TQuery>)

Associates a System.Type (that implements IQueryNode) with a builder

Declaration
public virtual void SetBuilder(Type queryNodeClass, IQueryBuilder<TQuery> builder)
Parameters
Type Name Description
System.Type queryNodeClass

The type (a class that implements IQueryNode)
IQueryBuilder<TQuery> builder

the builder to be associated

Implements