Package osgeo :: Module ogr :: Class FieldDefn |
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# Class FieldDefn

source code

Proxy of C++ OGRFieldDefnShadow class

Instance Methods | [hide private]
__repr__(self) | source code
__init__(self, *args, **kwargs) __init__(self, char name_null_ok = "unnamed", OGRFieldType field_type = OFTString) -> FieldDefn | source code
char |
GetName(self) | source code
char |
GetNameRef(self) const char* OGR_Fld_GetNameRef(OGRFieldDefnH hDefn) | source code
SetName(self, *args) SetName(self, char name) | source code
OGRFieldType |
GetType(self) OGRFieldType OGR_Fld_GetType(OGRFieldDefnH hDefn) | source code
SetType(self, *args) SetType(self, OGRFieldType type) | source code
OGRFieldSubType |
GetSubType(self) OGRFieldSubType OGR_Fld_GetSubType(OGRFieldDefnH hDefn) | source code
SetSubType(self, *args) SetSubType(self, OGRFieldSubType type) | source code
OGRJustification |
GetJustify(self) OGRJustification OGR_Fld_GetJustify(OGRFieldDefnH hDefn) | source code
SetJustify(self, *args) SetJustify(self, OGRJustification justify) | source code
int |
GetWidth(self) int OGR_Fld_GetWidth(OGRFieldDefnH hDefn) | source code
SetWidth(self, *args) SetWidth(self, int width) | source code
int |
GetPrecision(self) int OGR_Fld_GetPrecision(OGRFieldDefnH hDefn) | source code
SetPrecision(self, *args) SetPrecision(self, int precision) | source code
char |
GetTypeName(self) | source code
GetFieldTypeName(self, *args) GetFieldTypeName(self, OGRFieldType type) -> char | source code
int |
IsIgnored(self) int OGR_Fld_IsIgnored(OGRFieldDefnH hDefn) | source code
SetIgnored(self, *args) SetIgnored(self, int bIgnored) | source code
int |
IsNullable(self) int OGR_Fld_IsNullable(OGRFieldDefnH hDefn) | source code
SetNullable(self, *args) SetNullable(self, int bNullable) | source code
char |
GetDefault(self) const char* OGR_Fld_GetDefault(OGRFieldDefnH hDefn) | source code
SetDefault(self, *args) SetDefault(self, char pszValue) | source code
int |
IsDefaultDriverSpecific(self) int OGR_Fld_IsDefaultDriverSpecific(OGRFieldDefnH hDefn) | source code
Destroy(self) Once called, self has effectively been destroyed. | source code

Class Variables | [hide private]
| __swig_setmethods__ = `{}`
| __setattr__ = `lambda self, name, value:`
| __swig_getmethods__ = `{}`
| __getattr__ = `lambda self, name:`
| __swig_destroy__ = `_ogr.delete_FieldDefn`
| __del__ = `lambda self:`
| width = `property(GetWidth, SetWidth)`
| type = `property(GetType, SetType)`
| precision = `property(GetPrecision, SetPrecision)`
| name = `property(GetName, SetName)`
| justify = `property(GetJustify, SetJustify)`

Method Details | [hide private]

### GetNameRef(self) | source code
    const char*
    OGR_Fld_GetNameRef(OGRFieldDefnH hDefn)

    Fetch name of this field.

    This function is the same as the CPP method
    OGRFieldDefn::GetNameRef().

    Parameters:
    -----------

    hDefn:  handle to the field definition.

    the name of the field definition.
Returns: char

### SetName(self, *args) | source code
    SetName(self, char name)

    void OGR_Fld_SetName(OGRFieldDefnH
    hDefn, const char *pszName)

    Reset the name of this field.

    This function is the same as the CPP method OGRFieldDefn::SetName().

    Parameters:
    -----------

    hDefn:  handle to the field definition to apply the new name to.

    pszName:  the new name to apply.

### GetType(self) | source code
    OGRFieldType
    OGR_Fld_GetType(OGRFieldDefnH hDefn)

    Fetch type of this field.

    This function is the same as the CPP method OGRFieldDefn::GetType().

    Parameters:
    -----------

    hDefn:  handle to the field definition to get type from.

    field type.
Returns: OGRFieldType

### SetType(self, *args) | source code
    SetType(self, OGRFieldType type)

    void OGR_Fld_SetType(OGRFieldDefnH
    hDefn, OGRFieldType eType)

    Set the type of this field.

    This should never be done to an OGRFieldDefn that is already part of
    an OGRFeatureDefn.

    This function is the same as the CPP method OGRFieldDefn::SetType().

    Parameters:
    -----------

    hDefn:  handle to the field definition to set type to.

    eType:  the new field type.

### GetSubType(self) | source code
    OGRFieldSubType
    OGR_Fld_GetSubType(OGRFieldDefnH hDefn)

    Fetch subtype of this field.

    This function is the same as the CPP method
    OGRFieldDefn::GetSubType().

    Parameters:
    -----------

    hDefn:  handle to the field definition to get subtype from.

    field subtype.

    GDAL 2.0
Returns: OGRFieldSubType

### SetSubType(self, *args) | source code
    SetSubType(self, OGRFieldSubType type)

    void
    OGR_Fld_SetSubType(OGRFieldDefnH hDefn, OGRFieldSubType eSubType)

    Set the subtype of this field.

    This should never be done to an OGRFieldDefn that is already part of
    an OGRFeatureDefn.

    This function is the same as the CPP method
    OGRFieldDefn::SetSubType().

    Parameters:
    -----------

    hDefn:  handle to the field definition to set type to.

    eSubType:  the new field subtype.

    GDAL 2.0

### GetJustify(self) | source code
    OGRJustification
    OGR_Fld_GetJustify(OGRFieldDefnH hDefn)

    Get the justification for this field.

    This function is the same as the CPP method
    OGRFieldDefn::GetJustify().

    Note: no driver is know to use the concept of field justification.

    Parameters:
    -----------

    hDefn:  handle to the field definition to get justification from.

    the justification.
Returns: OGRJustification

### SetJustify(self, *args) | source code
    SetJustify(self, OGRJustification justify)

    void
    OGR_Fld_SetJustify(OGRFieldDefnH hDefn, OGRJustification eJustify)

    Set the justification for this field.

    Note: no driver is know to use the concept of field justification.

    This function is the same as the CPP method
    OGRFieldDefn::SetJustify().

    Parameters:
    -----------

    hDefn:  handle to the field definition to set justification to.

    eJustify:  the new justification.

### GetWidth(self) | source code
    int OGR_Fld_GetWidth(OGRFieldDefnH
    hDefn)

    Get the formatting width for this field.

    This function is the same as the CPP method OGRFieldDefn::GetWidth().

    Parameters:
    -----------

    hDefn:  handle to the field definition to get width from.

    the width, zero means no specified width.
Returns: int

### SetWidth(self, *args) | source code
    SetWidth(self, int width)

    void OGR_Fld_SetWidth(OGRFieldDefnH
    hDefn, int nNewWidth)

    Set the formatting width for this field in characters.

    This function is the same as the CPP method OGRFieldDefn::SetWidth().

    Parameters:
    -----------

    hDefn:  handle to the field definition to set width to.

    nNewWidth:  the new width.

### GetPrecision(self) | source code
    int
    OGR_Fld_GetPrecision(OGRFieldDefnH hDefn)

    Get the formatting precision for this field.

    This should normally be zero for fields of types other than OFTReal.

    This function is the same as the CPP method
    OGRFieldDefn::GetPrecision().

    Parameters:
    -----------

    hDefn:  handle to the field definition to get precision from.

    the precision.
Returns: int

### SetPrecision(self, *args) | source code
    SetPrecision(self, int precision)

    void
    OGR_Fld_SetPrecision(OGRFieldDefnH hDefn, int nPrecision)

    Set the formatting precision for this field in characters.

    This should normally be zero for fields of types other than OFTReal.

    This function is the same as the CPP method
    OGRFieldDefn::SetPrecision().

    Parameters:
    -----------

    hDefn:  handle to the field definition to set precision to.

    nPrecision:  the new precision.

### IsIgnored(self) | source code
    int OGR_Fld_IsIgnored(OGRFieldDefnH
    hDefn)

    Return whether this field should be omitted when fetching features.

    This method is the same as the C++ method OGRFieldDefn::IsIgnored().

    Parameters:
    -----------

    hDefn:  handle to the field definition

    ignore state
Returns: int

### SetIgnored(self, *args) | source code
    SetIgnored(self, int bIgnored)

    void
    OGR_Fld_SetIgnored(OGRFieldDefnH hDefn, int ignore)

    Set whether this field should be omitted when fetching features.

    This method is the same as the C++ method OGRFieldDefn::SetIgnored().

    Parameters:
    -----------

    hDefn:  handle to the field definition

    ignore:  ignore state

### IsNullable(self) | source code
    int
    OGR_Fld_IsNullable(OGRFieldDefnH hDefn)

    Return whether this field can receive null values.

    By default, fields are nullable.

    Even if this method returns FALSE (i.e not-nullable field), it doesn't
    mean that OGRFeature::IsFieldSet() will necessary return TRUE, as
    fields can be temporary unset and null/not-null validation is usually
    done when OGRLayer::CreateFeature()/SetFeature() is called.

    This method is the same as the C++ method OGRFieldDefn::IsNullable().

    Parameters:
    -----------

    hDefn:  handle to the field definition

    TRUE if the field is authorized to be null.

    GDAL 2.0
Returns: int

### SetNullable(self, *args) | source code
    SetNullable(self, int bNullable)

    void
    OGR_Fld_SetNullable(OGRFieldDefnH hDefn, int bNullableIn)

    Set whether this field can receive null values.

    By default, fields are nullable, so this method is generally called
    with FALSE to set a not-null constraint.

    Drivers that support writing not-null constraint will advertize the
    GDAL_DCAP_NOTNULL_FIELDS driver metadata item.

    This method is the same as the C++ method OGRFieldDefn::SetNullable().

    Parameters:
    -----------

    hDefn:  handle to the field definition

    bNullableIn:  FALSE if the field must have a not-null constraint.

    GDAL 2.0

### GetDefault(self) | source code
    const char*
    OGR_Fld_GetDefault(OGRFieldDefnH hDefn)

    Get default field value.

    This function is the same as the C++ method
    OGRFieldDefn::GetDefault().

    Parameters:
    -----------

    hDefn:  handle to the field definition.

    default field value or NULL.

    GDAL 2.0
Returns: char

### SetDefault(self, *args) | source code
    SetDefault(self, char pszValue)

    void
    OGR_Fld_SetDefault(OGRFieldDefnH hDefn, const char *pszDefault)

    Set default field value.

    The default field value is taken into account by drivers (generally
    those with a SQL interface) that support it at field creation time.
    OGR will generally not automatically set the default field value to
    null fields by itself when calling OGRFeature::CreateFeature() /
    OGRFeature::SetFeature(), but will let the low-level layers to do the
    job. So retrieving the feature from the layer is recommended.

    The accepted values are NULL, a numeric value, a literal value
    enclosed between single quote characters (and inner single quote
    characters escaped by repetition of the single quote character),
    CURRENT_TIMESTAMP, CURRENT_TIME, CURRENT_DATE or a driver specific
    expression (that might be ignored by other drivers). For a datetime
    literal value, format should be 'YYYY/MM/DD HH:MM:SS[.sss]'
    (considered as UTC time).

    Drivers that support writing DEFAULT clauses will advertize the
    GDAL_DCAP_DEFAULT_FIELDS driver metadata item.

    This function is the same as the C++ method
    OGRFieldDefn::SetDefault().

    Parameters:
    -----------

    hDefn:  handle to the field definition.

    pszDefault:  new default field value or NULL pointer.

    GDAL 2.0

### IsDefaultDriverSpecific(self) | source code
    int
    OGR_Fld_IsDefaultDriverSpecific(OGRFieldDefnH hDefn)

    Returns whether the default value is driver specific.

    Driver specific default values are those that are *not* NULL, a
    numeric value, a literal value enclosed between single quote
    characters, CURRENT_TIMESTAMP, CURRENT_TIME, CURRENT_DATE or datetime
    literal value.

    This function is the same as the C++ method
    OGRFieldDefn::IsDefaultDriverSpecific().

    Parameters:
    -----------

    hDefn:  handle to the field definition

    TRUE if the default value is driver specific.

    GDAL 2.0
Returns: int

### Destroy(self) | source code
Once called, self has effectively been destroyed. Do not access. For backwards compatibility only