ColumnMetaData (DataNucleus Core 3.2.11 API)

java.lang.Object
- org.datanucleus.metadata.MetaData
- - org.datanucleus.metadata.ColumnMetaData

All Implemented Interfaces:

Serializable
```
public class ColumnMetaData
extends MetaData
```
Representation of the Meta-Data for a column mapping of a field.

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected Boolean`	`allowsNull` Whether the column accepts nulls.
`protected String`	`columnDdl` Optional column DDL appended to the column definition defined by DataNucleus.
`protected String`	`defaultValue` Default value for the column (when constructing the table with this column).
`protected boolean`	`insertable` Whether this column is to be inserted when the owning object is inserted.
`protected String`	`insertValue` value to use when inserting this column in the datastore (the column is not mapped to a field/property)
`protected String`	`jdbcType` jdbc-type to use (if any).
`protected Integer`	`length` length to use (if any).
`protected String`	`name` column name.
`protected Integer`	`position` Column position for the table as a whole (0-origin).
`protected Integer`	`scale` scale to use (if any).
`protected String`	`sqlType` sql-type to use (if any).
`protected String`	`target` target column name (for matching across a FK).
`protected String`	`targetMember` target field/property name (for matching across a FK).
`protected boolean`	`unique` Whether this column should be marked as UNIQUE.
`protected boolean`	`updateable` Whether this column can be updated when the owning object is updated.

Fields inherited from class org.datanucleus.metadata.MetaData
extensions, LOCALISER, METADATA_CREATED_STATE, METADATA_INITIALISED_STATE, METADATA_POPULATED_STATE, METADATA_USED_STATE, metaDataState, parent, VENDOR_NAME, VENDOR_NAME_OLD

Constructor Summary

Constructors
Constructor and Description

ColumnMetaData()
Default constructor.

ColumnMetaData(ColumnMetaData colmd)
Creates a ColumnMetaData by copying contents from colmd.

Constructors
Constructor and Description
`ColumnMetaData()` Default constructor.
`ColumnMetaData(ColumnMetaData colmd)` Creates a ColumnMetaData by copying contents from `colmd`.

Method Summary

Methods
Modifier and Type	Method and Description
`Boolean`	`getAllowsNull()`
`String`	`getColumnDdl()`
`String`	`getDefaultValue()`
`boolean`	`getInsertable()`
`String`	`getInsertValue()`
`String`	`getJdbcType()`
`Integer`	`getLength()`
`String`	`getName()`
`Integer`	`getPosition()`
`Integer`	`getScale()`
`String`	`getSqlType()`
`String`	`getTarget()`
`String`	`getTargetMember()`
`boolean`	`getUnique()`
`boolean`	`getUpdateable()`
`boolean`	`isAllowsNull()`
`Boolean`	`isFloatingPointBased()`
`Boolean`	`isIntegralBased()`
`Boolean`	`isStringBased()`
`ColumnMetaData`	`setAllowsNull(Boolean allowsNull)`
`ColumnMetaData`	`setAllowsNull(String allowsNull)`
`void`	`setColumnDdl(String columnDdl)`
`ColumnMetaData`	`setDefaultValue(String defaultValue)`
`ColumnMetaData`	`setInsertable(boolean insertable)`
`ColumnMetaData`	`setInsertable(String insertable)`
`ColumnMetaData`	`setInsertValue(String insertValue)`
`ColumnMetaData`	`setJdbcType(String jdbcType)`
`ColumnMetaData`	`setLength(Integer length)`
`ColumnMetaData`	`setLength(String length)`
`ColumnMetaData`	`setName(String name)`
`ColumnMetaData`	`setPosition(int pos)`
`ColumnMetaData`	`setPosition(String pos)`
`ColumnMetaData`	`setScale(Integer scale)`
`ColumnMetaData`	`setScale(String scale)`
`ColumnMetaData`	`setSqlType(String sqlType)`
`ColumnMetaData`	`setTarget(String target)`
`ColumnMetaData`	`setTargetMember(String targetMember)`
`ColumnMetaData`	`setUnique(boolean unique)`
`ColumnMetaData`	`setUnique(String unique)`
`ColumnMetaData`	`setUpdateable(boolean updateable)`
`ColumnMetaData`	`setUpdateable(String updateable)`
`String`	`toString(String prefix, String indent)` Returns a string representation of the object using a prefix

Methods inherited from class org.datanucleus.metadata.MetaData
addExtension, addExtension, assertIfInitialised, getExtensions, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, initialise, isInitialised, isPopulated, isUsed, newExtensionMetaData, removeExtension, setParent, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail
- name
```
protected String name
```
  column name.
- target
```
protected String target
```
  target column name (for matching across a FK).
- targetMember
```
protected String targetMember
```
  target field/property name (for matching across a FK).
- jdbcType
```
protected String jdbcType
```
  jdbc-type to use (if any).
- sqlType
```
protected String sqlType
```
  sql-type to use (if any). Takes priority over jdbc-type.
- length
```
protected Integer length
```
  length to use (if any). Also known as "precision" when for floating point types.
- scale
```
protected Integer scale
```
  scale to use (if any).
- allowsNull
```
protected Boolean allowsNull
```
  Whether the column accepts nulls.
- defaultValue
```
protected String defaultValue
```
  Default value for the column (when constructing the table with this column).
- insertValue
```
protected String insertValue
```
  value to use when inserting this column in the datastore (the column is not mapped to a field/property)
- insertable
```
protected boolean insertable
```
  Whether this column is to be inserted when the owning object is inserted.
- updateable
```
protected boolean updateable
```
  Whether this column can be updated when the owning object is updated.
- unique
```
protected boolean unique
```
  Whether this column should be marked as UNIQUE.
- columnDdl
```
protected String columnDdl
```
  Optional column DDL appended to the column definition defined by DataNucleus.
- position
```
protected Integer position
```
  Column position for the table as a whole (0-origin).

Constructor Detail
- ColumnMetaData
```
public ColumnMetaData(ColumnMetaData colmd)
```
  Creates a ColumnMetaData by copying contents from colmd.
  
  Parameters:
  colmd - MetaData for the column
- ColumnMetaData
```
public ColumnMetaData()
```
  Default constructor. Set the fields using setters, before populate().

Method Detail

getDefaultValue
```
public String getDefaultValue()
```

setDefaultValue

public ColumnMetaData setDefaultValue(String defaultValue)

getColumnDdl
```
public String getColumnDdl()
```

setColumnDdl

public void setColumnDdl(String columnDdl)

getInsertable
```
public boolean getInsertable()
```

setInsertable

public ColumnMetaData setInsertable(boolean insertable)

setInsertable

public ColumnMetaData setInsertable(String insertable)

getInsertValue
```
public String getInsertValue()
```

setInsertValue

public ColumnMetaData setInsertValue(String insertValue)

getJdbcType
```
public String getJdbcType()
```

setJdbcType

public ColumnMetaData setJdbcType(String jdbcType)

isIntegralBased
```
public Boolean isIntegralBased()
```

isFloatingPointBased
```
public Boolean isFloatingPointBased()
```

isStringBased
```
public Boolean isStringBased()
```

getLength
```
public Integer getLength()
```

setLength

public ColumnMetaData setLength(Integer length)

setLength

public ColumnMetaData setLength(String length)

getName
```
public String getName()
```

setName

public ColumnMetaData setName(String name)

getScale
```
public Integer getScale()
```

setScale

public ColumnMetaData setScale(Integer scale)

setScale

public ColumnMetaData setScale(String scale)

getSqlType
```
public String getSqlType()
```

setSqlType

public ColumnMetaData setSqlType(String sqlType)

getTarget
```
public String getTarget()
```

setTarget

public ColumnMetaData setTarget(String target)

getTargetMember
```
public String getTargetMember()
```

setTargetMember

public ColumnMetaData setTargetMember(String targetMember)

getPosition
```
public Integer getPosition()
```

setPosition

public ColumnMetaData setPosition(int pos)

setPosition

public ColumnMetaData setPosition(String pos)

getUnique
```
public boolean getUnique()
```

setUnique

public ColumnMetaData setUnique(boolean unique)

setUnique

public ColumnMetaData setUnique(String unique)

getUpdateable
```
public boolean getUpdateable()
```

setUpdateable

public ColumnMetaData setUpdateable(boolean updateable)

setUpdateable

public ColumnMetaData setUpdateable(String updateable)

isAllowsNull
```
public boolean isAllowsNull()
```

getAllowsNull
```
public Boolean getAllowsNull()
```

setAllowsNull

public ColumnMetaData setAllowsNull(Boolean allowsNull)

setAllowsNull

public ColumnMetaData setAllowsNull(String allowsNull)

toString
```
public String toString(String prefix,
              String indent)
```
Returns a string representation of the object using a prefix

Overrides:

toString in class MetaData

Parameters:
prefix - prefix string
indent - indent string

Returns:
a string representation of the object.

Class ColumnMetaData

Field Summary

Fields inherited from class org.datanucleus.metadata.MetaData

Constructor Summary

Method Summary

Methods inherited from class org.datanucleus.metadata.MetaData

Methods inherited from class java.lang.Object

Field Detail

name

target

targetMember

jdbcType

sqlType

length

scale

allowsNull

defaultValue

insertValue

insertable

updateable

unique

columnDdl

position

Constructor Detail

ColumnMetaData

ColumnMetaData

Method Detail

getDefaultValue

setDefaultValue

getColumnDdl

setColumnDdl

getInsertable

setInsertable

setInsertable

getInsertValue

setInsertValue

getJdbcType

setJdbcType

isIntegralBased

isFloatingPointBased

isStringBased

getLength

setLength

setLength

getName

setName

getScale

setScale

setScale

getSqlType

setSqlType

getTarget

setTarget

getTargetMember

setTargetMember

getPosition

setPosition

setPosition

getUnique

setUnique

setUnique

getUpdateable

setUpdateable

setUpdateable

isAllowsNull

getAllowsNull

setAllowsNull

setAllowsNull

toString