java.lang.Object
- antlr.BaseAST
- - antlr.CommonAST
  - - org.hibernate.hql.internal.ast.tree.Node
    - - org.hibernate.hql.internal.ast.tree.SqlNode
      - org.hibernate.hql.internal.ast.tree.HqlSqlWalkerNode
        
        org.hibernate.hql.internal.ast.tree.FromClause

所有已实现的接口:

antlr.collections.AST, Serializable, HqlSqlTokenTypes, DisplayableNode, InitializeableNode
```
public class FromClause
extends HqlSqlWalkerNode
implements HqlSqlTokenTypes, DisplayableNode
```
Represents the 'FROM' part of a query or subquery, containing all mapped class references.

作者:

josh

另请参阅:

序列化表格

字段概要

字段
修饰符和类型字段说明

static int ROOT_LEVEL
- 从类继承的字段 antlr.BaseAST
  down, right
- 从接口继承的字段 org.hibernate.hql.internal.antlr.HqlSqlTokenTypes
  AGGREGATE, ALIAS, ALIAS_REF, ALL, AND, ANY, AS, ASCENDING, AVG, BETWEEN, BOGUS, BOTH, CASE, CASE2, CAST, CLASS, CLOSE, CLOSE_BRACKET, COLON, COMMA, CONCAT, CONSTANT, CONSTRUCTOR, COUNT, DELETE, DESCENDING, DISTINCT, DIV, DOT, ELEMENTS, ELSE, EMPTY, END, ENTITY_JOIN, ENTRY, EOF, EQ, ESCAPE, ESCqs, EXISTS, EXPONENT, EXPR_LIST, FALSE, FETCH, FILTER_ENTITY, FILTERS, FIRST, 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, KEY, LAST, LE, LEADING, LEFT, LEFT_OUTER, LIKE, LITERAL_ascending, LITERAL_by, LITERAL_descending, LT, MAX, MEMBER, METHOD_CALL, METHOD_NAME, MIN, MINUS, MOD, NAMED_PARAM, NE, NEW, NOT, NOT_BETWEEN, NOT_IN, NOT_LIKE, NULL, NULL_TREE_LOOKAHEAD, NULLS, NUM_BIG_DECIMAL, NUM_BIG_INTEGER, 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, RESULT_VARIABLE_REF, 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, UPDATE, VALUE, VECTOR_EXPR, VERSIONED, WEIRD_IDENT, WHEN, WHERE, WITH, WS

构造器概要

构造器
构造器说明

FromClause()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`FromElement`	`addFromElement(String path, antlr.collections.AST alias)`	Adds a new from element to the from node.
`void`	`addImpliedFromElement(FromElement element)`
`boolean`	`containsClassAlias(String alias)`	Returns true if the from node contains the class alias name.
`boolean`	`containsTableAlias(String alias)`	Returns true if the from node contains the table alias name.
`FromElement`	`findFromElementBySqlAlias(String sqlAlias)`
`FromElement`	`findFromElementByUserOrSqlAlias(String userAlias, String sqlAlias)`
`void`	`finishInit()`
`List`	`getCollectionFetches()`
`String`	`getDisplayText()`	Returns additional display text for the AST node.
`List`	`getExplicitFromElements()`
`FromElement`	`getFromElement()`
`FromElement`	`getFromElement(String aliasOrClassName)`	Retrieve the from-element represented by the given alias.
`List`	`getFromElements()`	Returns the list of from elements in order.
`int`	`getLevel()`
`FromClause`	`getParentFromClause()`
`List`	`getProjectionList()`	Returns the list of from elements that will be part of the result set.
`boolean`	`hasCollectionFecthes()`
`boolean`	`isFromElementAlias(String possibleAlias)`	Convenience method to check whether a given token represents a from-element alias.
`boolean`	`isSubQuery()`
`FromClause`	`locateChildFromClauseWithJoinByPath(String path)`
`int`	`nextFromElementCounter()`
`void`	`promoteJoin(FromElement elem)`
`void`	`resolve()`
`void`	`setParentFromClause(FromClause parentFromClause)`
`String`	`toString()`

从类继承的方法 org.hibernate.hql.internal.ast.tree.HqlSqlWalkerNode
getAliasGenerator, getASTFactory, getSessionFactoryHelper, getWalker, initialize

从类继承的方法 org.hibernate.hql.internal.ast.tree.SqlNode
getDataType, getOriginalText, setDataType, setText

从类继承的方法 org.hibernate.hql.internal.ast.tree.Node
getColumn, getFilename, getLine, getRenderText, getTextLength, initialize, initialize

从类继承的方法 antlr.CommonAST
getText, getType, initialize, setType

从类继承的方法 antlr.BaseAST
addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - ROOT_LEVEL
```
public static final int ROOT_LEVEL
```
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - FromClause
```
public FromClause()
```
- 方法详细资料
  - addFromElement
```
public FromElement addFromElement(String path,
                                  antlr.collections.AST alias)
                           throws antlr.SemanticException
```
    Adds a new from element to the from node.
    
    参数:
    
    path - The reference to the class.
    
    alias - The alias AST.
    
    返回:
    
    FromElement - The new FROM element.
    
    抛出:
    
    antlr.SemanticException
  - finishInit
```
public void finishInit()
```
  - getFromElement
```
public FromElement getFromElement(String aliasOrClassName)
```
    Retrieve the from-element represented by the given alias.
    
    参数:
    
    aliasOrClassName - The alias by which to locate the from-element.
    
    返回:
    
    The from-element assigned the given alias, or null if none.
  - findFromElementBySqlAlias
```
public FromElement findFromElementBySqlAlias(String sqlAlias)
```
  - findFromElementByUserOrSqlAlias
```
public FromElement findFromElementByUserOrSqlAlias(String userAlias,
                                                   String sqlAlias)
```
  - isFromElementAlias
```
public boolean isFromElementAlias(String possibleAlias)
```
    Convenience method to check whether a given token represents a from-element alias.
    
    参数:
    
    possibleAlias - The potential from-element alias to check.
    
    返回:
    
    True if the possibleAlias is an alias to a from-element visible from this point in the query graph.
  - getFromElements
```
public List getFromElements()
```
    Returns the list of from elements in order.
    
    返回:
    
    the list of from elements (instances of FromElement).
  - getFromElement
```
public FromElement getFromElement()
```
  - getProjectionList
```
public List getProjectionList()
```
    Returns the list of from elements that will be part of the result set.
    
    返回:
    
    the list of from elements that will be part of the result set.
  - getCollectionFetches
```
public List getCollectionFetches()
```
  - hasCollectionFecthes
```
public boolean hasCollectionFecthes()
```
  - getExplicitFromElements
```
public List getExplicitFromElements()
```
  - containsClassAlias
```
public boolean containsClassAlias(String alias)
```
    Returns true if the from node contains the class alias name.
    
    参数:
    
    alias - The HQL class alias name.
    
    返回:
    
    true if the from node contains the class alias name.
  - containsTableAlias
```
public boolean containsTableAlias(String alias)
```
    Returns true if the from node contains the table alias name.
    
    参数:
    
    alias - The SQL table alias name.
    
    返回:
    
    true if the from node contains the table alias name.
  - getDisplayText
```
public String getDisplayText()
```
    从接口复制的说明: DisplayableNode
    
    Returns additional display text for the AST node.
    
    指定者:
    
    getDisplayText 在接口中 DisplayableNode
    
    返回:
    
    String - The additional display text.
  - setParentFromClause
```
public void setParentFromClause(FromClause parentFromClause)
```
  - locateChildFromClauseWithJoinByPath
```
public FromClause locateChildFromClauseWithJoinByPath(String path)
```
  - promoteJoin
```
public void promoteJoin(FromElement elem)
```
  - isSubQuery
```
public boolean isSubQuery()
```
  - getParentFromClause
```
public FromClause getParentFromClause()
```
  - getLevel
```
public int getLevel()
```
  - nextFromElementCounter
```
public int nextFromElementCounter()
```
  - resolve
```
public void resolve()
```
  - addImpliedFromElement
```
public void addImpliedFromElement(FromElement element)
```
  - toString
```
public String toString()
```
    指定者:
    
    toString 在接口中 antlr.collections.AST
    
    覆盖:
    
    toString 在类中 antlr.BaseAST

类 FromClause

字段概要

从类继承的字段 antlr.BaseAST

从接口继承的字段 org.hibernate.hql.internal.antlr.HqlSqlTokenTypes

构造器概要

方法概要

从类继承的方法 org.hibernate.hql.internal.ast.tree.HqlSqlWalkerNode

从类继承的方法 org.hibernate.hql.internal.ast.tree.SqlNode

从类继承的方法 org.hibernate.hql.internal.ast.tree.Node

从类继承的方法 antlr.CommonAST

从类继承的方法 antlr.BaseAST

从类继承的方法 java.lang.Object

字段详细资料

ROOT_LEVEL

构造器详细资料

FromClause

方法详细资料

addFromElement

finishInit

getFromElement

findFromElementBySqlAlias

findFromElementByUserOrSqlAlias

isFromElementAlias

getFromElements

getFromElement

getProjectionList

getCollectionFetches

hasCollectionFecthes

getExplicitFromElements

containsClassAlias

containsTableAlias

getDisplayText

setParentFromClause

locateChildFromClauseWithJoinByPath

promoteJoin

isSubQuery

getParentFromClause

getLevel

nextFromElementCounter

resolve

addImpliedFromElement

toString