SqlASTFactory (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.hql.ast
Class SqlASTFactory

java.lang.Object
  antlr.ASTFactory
      org.hibernate.hql.ast.SqlASTFactory

All Implemented Interfaces:: HqlSqlTokenTypes

public class SqlASTFactory
extends antlr.ASTFactory
implements HqlSqlTokenTypes

Custom AST factory the intermediate tree that causes ANTLR to create specialized AST nodes, given the AST node type (from HqlSqlTokenTypes). HqlSqlWalker registers this factory with itself when it is initialized.

Author:: Joshua

Field Summary

Fields inherited from class antlr.ASTFactory

theASTNodeType, theASTNodeTypeClass, tokenTypeToASTClassMap

Fields inherited from interface org.hibernate.hql.antlr.HqlSqlTokenTypes

AGGREGATE, ALIAS, ALIAS_REF, ALL, AND, ANY, AS, ASCENDING, AVG, BETWEEN, BOGUS, BOTH, CASE, CASE2, CLASS, CLOSE, CLOSE_BRACKET, COLON, COMMA, CONCAT, CONSTANT, CONSTRUCTOR, COUNT, DELETE, DESCENDING, DISTINCT, DIV, DOT, ELEMENTS, ELSE, EMPTY, END, EOF, EQ, ESCAPE, ESCqs, EXISTS, EXPONENT, EXPR_LIST, FALSE, FETCH, FILTER_ENTITY, FILTERS, FLOAT_SUFFIX, FROM, FROM_FRAGMENT, FULL, GE, GROUP, GT, HAVING, HEX_DIGIT, ID_LETTER, ID_START_LETTER, IDENT, IMPLIED_FROM, IN, IN_LIST, INDEX_OP, INDICES, INNER, INSERT, INTO, IS, IS_NOT_NULL, IS_NULL, JAVA_CONSTANT, JOIN, JOIN_FRAGMENT, LE, LEADING, LEFT, LEFT_OUTER, LIKE, LITERAL_ascending, LITERAL_by, LITERAL_descending, LT, MAX, MEMBER, METHOD_CALL, METHOD_NAME, MIN, MINUS, NAMED_PARAM, NE, NEW, NOT, NOT_BETWEEN, NOT_IN, NOT_LIKE, NULL, NULL_TREE_LOOKAHEAD, NUM_DOUBLE, NUM_FLOAT, NUM_INT, NUM_LONG, OBJECT, OF, ON, OPEN, OPEN_BRACKET, OR, ORDER, ORDER_ELEMENT, OUTER, PARAM, PLUS, PROPERTIES, PROPERTY_REF, QUERY, QUOTED_STRING, RANGE, RIGHT, RIGHT_OUTER, ROW_STAR, SELECT, SELECT_CLAUSE, SELECT_COLUMNS, SELECT_EXPR, SELECT_FROM, SET, SOME, SQL_NE, SQL_TOKEN, STAR, SUM, THEN, THETA_JOINS, TRAILING, TRUE, UNARY_MINUS, UNARY_PLUS, UNION, UPDATE, VECTOR_EXPR, VERSIONED, WEIRD_IDENT, WHEN, WHERE, WITH, WS

Constructor Summary

SqlASTFactory(HqlSqlWalker walker)
          Create factory with a specific mapping from token type to Java AST node type.

Method Summary

protected antlr.collections.AST create(Class c)
          Actually instantiate the AST node.

protected antlr.collections.AST createUsingCtor(antlr.Token token, String className)


Class getASTNodeType(int tokenType)
          Returns the class for a given token type (a.k.a.

Methods inherited from class antlr.ASTFactory

addASTChild, create, create, create, create, create, create, create, create, dup, dupList, dupTree, error, getTokenTypeToASTClassMap, make, make, makeASTRoot, setASTNodeClass, setASTNodeClass, setASTNodeType, setTokenTypeASTNodeType, setTokenTypeToASTClassMap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SqlASTFactory

public SqlASTFactory(HqlSqlWalker walker)

Create factory with a specific mapping from token type to Java AST node type. Your subclasses of ASTFactory can override and reuse the map stuff.

Method Detail

getASTNodeType

public Class getASTNodeType(int tokenType)

Returns the class for a given token type (a.k.a. AST node type).

Parameters:: tokenType - The token type.
Returns:: Class - The AST node class to instantiate.

createUsingCtor

protected antlr.collections.AST createUsingCtor(antlr.Token token,
                                                String className)

create

protected antlr.collections.AST create(Class c)

Actually instantiate the AST node.

Parameters:: c - The class to instantiate.
Returns:: The instantiated and initialized node.