EDT:EGL Language Primitive Types

Please see the parent of this page, EDT:EGL Language.

Primitive Types (Table 3)

Primitive Types	Value or Reference?	Core	JavaScript Nullable Types	Java
Any	reference	done	1.5d	done
Boolean	value	done	done	done
String(N)	reference	done bug 366892	done bug 366893	done Limited string support
String	reference8	done	done	done
Date1 EDT:EGL Language Primitive Type Date	value	done	done	done Date support
Timestamp(pattern)1 EDT:EGL Language Primitive Type Timestamp	value	done	0.5	done Timestamp with pattern support
Timestamp1,6 EDT:EGL Language Primitive Type Timestamp	reference8	done	0.5d	done Timestamp without pattern support
Blob	reference	done	N/S	1d Blob support
Clob	reference	done	N/S	1d Clob support
Smallint	value	done	done	done
Int	value	done	done	done
Bigint	value	done	done	done
Decimal(N,M)7	value	done	done	done
Decimal2	reference	done	done	done
Float	value	done	done	done
Smallfloat	value	done	done	done
Number3	reference	done bug 354146	done	1d Generic number support
Bytes(N)4	value	done	0.5d	0.5d Bytes with length support
Bytes5	reference	done	0.5d	0.5d Bytes without length support
Time1		done	done Time support	done Time support
Char		done	N/S	N/S
Dbchar		done	N/S	N/S
Mbchar		done	N/S	N/S
Unicode		done	N/S	N/S
Hex4		done	N/S	N/S
Interval1		1d	N/S	N/S
Bin		done	N/S	N/S
Num		done	N/S	N/S
Numc		done	N/S	N/S
Pacf		done	N/S	N/S
Money		done	N/S	N/S

Notes on Table 3

1. Date and timestamp are the only supported date/time types. Use a timestamp in place of RBD's time.  You might be able to use a numeric type in place of RBD's interval.
2. Decimal with no length or decimals is a reference type with an immutable value.
3. Number is a reference type with an immutable value. Unlike in RBD, number variables can be declared anywhere a variable declaration is allowed.
4. Bytes(N) is a value type similar to RBD's hex. N indicates the number of bytes in the value. (In RBD, the length of a hex is the number of nibbles not the nubmer of bytes.)
5. Bytes with no length is a reference type with an immutable value of any length.
   
6. Timestamp with no pattern is a reference type in EDT.  It can hold any timestamp value.
7. As in RBD, it's OK to only specify the length when using the decimal type. Decimal(N) is internally mapped to decimal(N,0).
   
8. These will be value types in 0.7 but they'll change to references in 1.0.

More about the Bytes type

Bytes is meant to hold data with no particular format.

Assignment between two bytes values with no length is a reference assignment. Assignment between two bytes values when one or both has a length is a value assignment (data is copied). If the source is longer bytes on its right side are truncated. If the source is shorter then we don't add padding: we just don't update what was there before. For example if your bytes(3) is 0x123456 and you assign it a bytes(1) value of 0x99 then the bytes(3) ends up with 0x993456.

In order for two bytes values to be compared, they must both have a size, and the sizes must be equal. The comparison is done one bit at a time, from left to right, until a difference is found. The operand with a one instead of a zero is greater.

The bytes type supports the substring operator. The type of the result is bytes (with no length).