com.alibaba.druid.sql.ast.statement

类 SQLSelectItem

java.lang.Object

com.alibaba.druid.sql.ast.SQLObjectImpl

com.alibaba.druid.sql.ast.statement.SQLSelectItem

所有已实现的接口:

SQLObject, SQLReplaceable

直接已知子类:

OdpsUDTFSQLSelectItem

public class SQLSelectItem
extends SQLObjectImpl
implements SQLReplaceable

字段概要

字段

限定符和类型	字段和说明
protected String	alias
protected long	aliasHashCode64
protected boolean	connectByRoot
protected SQLExpr	expr

从类继承的字段 com.alibaba.druid.sql.ast.SQLObjectImpl

attributes, parent

构造器概要

构造器

构造器和说明
SQLSelectItem()
SQLSelectItem(SQLExpr expr)
SQLSelectItem(SQLExpr expr, String alias)
SQLSelectItem(SQLExpr expr, String alias, boolean connectByRoot)

方法概要

限定符和类型	方法和说明
protected void	accept0(SQLASTVisitor visitor)
long	alias_hash()
SQLSelectItem	clone()
String	computeAlias()
SQLDataType	computeDataType()
boolean	equals(Object obj)
String	getAlias()
SQLExpr	getExpr()
int	hashCode()
boolean	isConnectByRoot()
boolean	match(long alias_hash)
boolean	match(String alias)
void	output(StringBuffer buf)
boolean	replace(SQLExpr expr, SQLExpr target)
void	setAlias(String alias)
void	setConnectByRoot(boolean connectByRoot)
void	setExpr(SQLExpr expr)
String	toString()

从类继承的方法 com.alibaba.druid.sql.ast.SQLObjectImpl

accept, acceptChild, acceptChild, addAfterComment, addAfterComment, addBeforeComment, addBeforeComment, containsAttribute, getAfterCommentsDirect, getAttribute, getAttributes, getAttributesDirect, getBeforeCommentsDirect, getParent, hasAfterComment, hasBeforeComment, putAttribute, setParent

从类继承的方法 java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

expr

protected SQLExpr expr

alias

protected String alias

connectByRoot

protected boolean connectByRoot

aliasHashCode64

protected transient long aliasHashCode64

构造器详细资料

SQLSelectItem

public SQLSelectItem()

SQLSelectItem

public SQLSelectItem(SQLExpr expr)

SQLSelectItem

public SQLSelectItem(SQLExpr expr,
                     String alias)

SQLSelectItem

public SQLSelectItem(SQLExpr expr,
                     String alias,
                     boolean connectByRoot)

方法详细资料

getExpr

public SQLExpr getExpr()

setExpr

public void setExpr(SQLExpr expr)

computeAlias

public String computeAlias()

computeDataType

public SQLDataType computeDataType()

覆盖:

computeDataType 在类中 SQLObjectImpl

getAlias

public String getAlias()

setAlias

public void setAlias(String alias)

output

public void output(StringBuffer buf)

指定者:

output 在接口中 SQLObject

覆盖:

output 在类中 SQLObjectImpl

accept0

protected void accept0(SQLASTVisitor visitor)

指定者:

accept0 在类中 SQLObjectImpl

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

isConnectByRoot

public boolean isConnectByRoot()

setConnectByRoot

public void setConnectByRoot(boolean connectByRoot)

clone

public SQLSelectItem clone()

指定者:

clone 在接口中 SQLObject

覆盖:

clone 在类中 SQLObjectImpl

replace

public boolean replace(SQLExpr expr,
                       SQLExpr target)

指定者:

replace 在接口中 SQLReplaceable

match

public boolean match(String alias)

alias_hash

public long alias_hash()

match

public boolean match(long alias_hash)

toString

public String toString()

覆盖:

toString 在类中 SQLObjectImpl