net.sf.jsqlparser.schema

Class Column

java.lang.Object

net.sf.jsqlparser.parser.ASTNodeAccessImpl

net.sf.jsqlparser.schema.Column

All Implemented Interfaces:

Expression, ASTNodeAccess, MultiPartName

public final class Column
extends ASTNodeAccessImpl
implements Expression, MultiPartName

A column. It can have the table name it belongs to.

Constructor Summary

Constructors

Constructor and Description
Column()
Column(List<String> nameParts)
Column(String columnName)
Column(Table table, String columnName)

Method Summary

Modifier and Type	Method and Description
void	accept(ExpressionVisitor expressionVisitor)
String	getColumnName()
String	getFullyQualifiedName()
String	getName(boolean aliases)
Table	getTable() Retrieve the information regarding the Table this Column does belong to, if any can be inferred.
void	setColumnName(String string)
void	setTable(Table table)
String	toString()

Methods inherited from class net.sf.jsqlparser.parser.ASTNodeAccessImpl

getASTNode, setASTNode

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.jsqlparser.parser.ASTNodeAccess

getASTNode, setASTNode

Constructor Detail

Column

public Column()

Column

public Column(Table table,
              String columnName)

Column

public Column(List<String> nameParts)

Column

public Column(String columnName)

Method Detail

getTable

public Table getTable()

Retrieve the information regarding the Table this Column does belong to, if any can be inferred.

The inference is based only on local information, and not on the whole SQL command. For example, consider the following query:

  SELECT x FROM Foo
 

Given the Column called x, this method would return null, and not the info about the table Foo. On the other hand, consider:

  SELECT t.x FROM Foo t
 

Here, we will get a Table object for a table called t. But because the inference is local, such object will not know that t is just an alias for Foo.

Returns:

an instance of Table representing the table this column does belong to, if it can be inferred. Can be null.

setTable

public void setTable(Table table)

getColumnName

public String getColumnName()

setColumnName

public void setColumnName(String string)

getFullyQualifiedName

public String getFullyQualifiedName()

Specified by:

getFullyQualifiedName in interface MultiPartName

getName

public String getName(boolean aliases)

accept

public void accept(ExpressionVisitor expressionVisitor)

Specified by:

accept in interface Expression

toString

public String toString()

Overrides:

toString in class Object