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

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org.hibernate.mapping
Class Column

java.lang.Object
  org.hibernate.mapping.Column

All Implemented Interfaces:

Cloneable, Selectable, Serializable

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public class Column

extends Object

implements Selectable, Serializable, Cloneable

A column of a relational database table

Author:

Gavin King

See Also:

Serialized Form

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Field Summary
static int	DEFAULT_LENGTH
static int	DEFAULT_PRECISION
static int	DEFAULT_SCALE

 

Constructor Summary

Column()

Column(String columnName)

 

Method Summary
protected  Object	clone()           Shallow copy, the value is not copied
boolean	equals(Column column)
boolean	equals(Object object)
String	getAlias(Dialect dialect)           For any column name, generate an alias that is unique to that column name, and also 10 characters or less in length.
String	getAlias(Dialect dialect, Table table)           Generate a column alias that is unique across multiple tables
String	getCanonicalName()
String	getCheckConstraint()
String	getComment()
String	getDefaultValue()
int	getLength()
String	getName()
int	getPrecision()
String	getQuotedName()           returns quoted name as it would be in the mapping file.
String	getQuotedName(Dialect d)
int	getScale()
String	getSqlType()
String	getSqlType(Dialect dialect, Mapping mapping)
Integer	getSqlTypeCode()           Returns the underlying columns sqltypecode.
int	getSqlTypeCode(Mapping mapping)
String	getTemplate(Dialect dialect, SQLFunctionRegistry functionRegistry)
String	getText()
String	getText(Dialect d)
int	getTypeIndex()
Value	getValue()
boolean	hasCheckConstraint()
int	hashCode()
boolean	isFormula()
boolean	isNullable()
boolean	isQuoted()
boolean	isUnique()
void	setCheckConstraint(String checkConstraint)
void	setComment(String comment)
void	setDefaultValue(String defaultValue)
void	setLength(int length)
void	setName(String name)
void	setNullable(boolean nullable)
void	setPrecision(int scale)
void	setScale(int scale)
void	setSqlType(String sqlType)
void	setSqlTypeCode(Integer typecode)
void	setTypeIndex(int typeIndex)
void	setUnique(boolean unique)
void	setValue(Value value)
String	toString()

 

Methods inherited from class java.lang.Object

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

 

Field Detail

DEFAULT_LENGTH

public static final int DEFAULT_LENGTH

See Also:

Constant Field Values

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DEFAULT_PRECISION

public static final int DEFAULT_PRECISION

See Also:

Constant Field Values

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DEFAULT_SCALE

public static final int DEFAULT_SCALE

See Also:

Constant Field Values

Constructor Detail

Column

public Column()

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Column

public Column(String columnName)

Method Detail

getLength

public int getLength()

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setLength

public void setLength(int length)

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getValue

public Value getValue()

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setValue

public void setValue(Value value)

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getName

public String getName()

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setName

public void setName(String name)

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getQuotedName

public String getQuotedName()

returns quoted name as it would be in the mapping file.

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getQuotedName

public String getQuotedName(Dialect d)

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getAlias

public String getAlias(Dialect dialect)

For any column name, generate an alias that is unique to that column name, and also 10 characters or less in length.

Specified by:

getAlias in interface Selectable

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getAlias

public String getAlias(Dialect dialect,
                       Table table)

Generate a column alias that is unique across multiple tables

Specified by:

getAlias in interface Selectable

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isNullable

public boolean isNullable()

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setNullable

public void setNullable(boolean nullable)

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getTypeIndex

public int getTypeIndex()

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setTypeIndex

public void setTypeIndex(int typeIndex)

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getSqlTypeCode

public int getSqlTypeCode(Mapping mapping)
                   throws MappingException

Throws:

MappingException

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getSqlTypeCode

public Integer getSqlTypeCode()

Returns the underlying columns sqltypecode. If null, it is because the sqltype code is unknown. Use #getSqlTypeCode(Mapping) to retreive the sqltypecode used for the columns associated Value/Type.

Returns:

sqltypecode if it is set, otherwise null.

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setSqlTypeCode

public void setSqlTypeCode(Integer typecode)

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isUnique

public boolean isUnique()

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getSqlType

public String getSqlType(Dialect dialect,
                         Mapping mapping)
                  throws HibernateException

Throws:

HibernateException

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equals

public boolean equals(Object object)

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equals

public boolean equals(Column column)

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hashCode

public int hashCode()

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getSqlType

public String getSqlType()

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setSqlType

public void setSqlType(String sqlType)

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setUnique

public void setUnique(boolean unique)

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isQuoted

public boolean isQuoted()

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toString

public String toString()

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getCheckConstraint

public String getCheckConstraint()

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setCheckConstraint

public void setCheckConstraint(String checkConstraint)

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hasCheckConstraint

public boolean hasCheckConstraint()

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getTemplate

public String getTemplate(Dialect dialect,
                          SQLFunctionRegistry functionRegistry)

Specified by:

getTemplate in interface Selectable

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isFormula

public boolean isFormula()

Specified by:

isFormula in interface Selectable

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getText

public String getText(Dialect d)

Specified by:

getText in interface Selectable

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getText

public String getText()

Specified by:

getText in interface Selectable

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getPrecision

public int getPrecision()

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setPrecision

public void setPrecision(int scale)

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getScale

public int getScale()

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setScale

public void setScale(int scale)

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getComment

public String getComment()

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setComment

public void setComment(String comment)

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getDefaultValue

public String getDefaultValue()

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setDefaultValue

public void setDefaultValue(String defaultValue)

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getCanonicalName

public String getCanonicalName()

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clone

protected Object clone()

Shallow copy, the value is not copied

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