GdaValue
Single value stored in a #GdaDataModel
&LIBGDA; manages each individual value within an opaque GdaValue structure (which is in fact a #GValue). Each GdaValue
has a pre-defined type which is among the #GdaValueType possible types.
The NULL value is a special case value. It corresponds to a zero-filled (uninitialized) #GValue, and it is safe to
use such values.
@GDA_VALUE_TYPE_NULL: represents a NULL value
@GDA_VALUE_TYPE_BIGINT: signed integer guaranteed to be 64 bits on all platforms on which it is available (see G_HAVE_GINT64). Values of this type can range from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.
@GDA_VALUE_TYPE_BIGUINT: unsigned integer guaranteed to be 64 bits on all platforms on which it is available (see G_HAVE_GINT64). Values of this type can range from 0 to 18,446,744,073,709,551,615.
@GDA_VALUE_TYPE_BINARY: represents binary data: a buffer and its length
@GDA_VALUE_TYPE_BLOB: To be removed
@GDA_VALUE_TYPE_BOOLEAN: standard boolean type
@GDA_VALUE_TYPE_DATE: date type (Year, month, day)
@GDA_VALUE_TYPE_DOUBLE: standard C double type
@GDA_VALUE_TYPE_GEOMETRIC_POINT: a 2D point (x, y)
@GDA_VALUE_TYPE_GOBJECT: fundamental type for GObject
@GDA_VALUE_TYPE_INTEGER: standard C int type
@GDA_VALUE_TYPE_LIST: a list (GList) of GdaValue values
@GDA_VALUE_TYPE_MONEY: type to hold money values (a currency and a value as a double)
@GDA_VALUE_TYPE_NUMERIC: arbitrary precision numerical value (string plus precision and width)
@GDA_VALUE_TYPE_SINGLE: standard C float type
@GDA_VALUE_TYPE_SMALLINT: standard C short type
@GDA_VALUE_TYPE_SMALLUINT: standard C unsigned short type
@GDA_VALUE_TYPE_STRING: a string (0 terminated array of characters)
@GDA_VALUE_TYPE_TIME: time type (HH:MM:SS)
@GDA_VALUE_TYPE_TIMESTAMP: date and time type
@GDA_VALUE_TYPE_TINYINT: standard C char type
@GDA_VALUE_TYPE_TINYUINT: standard C unsigned char type
@GDA_VALUE_TYPE_TYPE: value which represents a GdaValueType
@GDA_VALUE_TYPE_UINTEGER: standard C unsigned int type
@GDA_VALUE_TYPE_UNKNOWN: undefined data type, can't be instanciated as it represents an error
@year:
@month:
@day:
@x:
@y:
@currency:
@amount:
@number:
@precision:
@width:
@hour:
@minute:
@second:
@timezone:
@year:
@month:
@day:
@hour:
@minute:
@second:
@fraction:
@timezone:
@data:
@binary_length:
@Returns:
@val:
@Returns:
@val:
@Returns:
@val:
@size:
@Returns:
@boxed:
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@boxed:
@val:
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@val:
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@as_string:
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@node:
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@value:
@binary:
@val:
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@bin:
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@strict:
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