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Specifies an interface for a query tree builder.
Method Summary | |
boolean |
canHandle(String language)
Returns true if this query tree builder can handle a
statement in language . |
QueryRootNode |
createQueryTree(String statement,
NamespaceResolver resolver)
Creates a QueryNode tree from a statement. |
String |
toString(QueryRootNode root,
NamespaceResolver resolver)
Creates a String representation of the query node tree in the syntax this QueryTreeBuilder can handle. |
Method Detail |
public QueryRootNode createQueryTree(String statement, NamespaceResolver resolver) throws InvalidQueryException
QueryNode
tree from a statement.
statement
- the statement.resolver
- the namespace resolver to use.
QueryNode
tree for the statement.
InvalidQueryException
- if the statement is malformed.public boolean canHandle(String language)
true
if this query tree builder can handle a
statement in language
.
language
- the language of a query statement to build a query tree.
true
if this builder can handle language
;
false
otherwise.public String toString(QueryRootNode root, NamespaceResolver resolver) throws InvalidQueryException
QueryTreeBuilder
can handle.
root
- the root of the query node tree.resolver
- to resolve QNames.
InvalidQueryException
- if the query node tree cannot be converted
into a String representation due to
restrictions in this syntax.
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