Text field: Difference between revisions
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Revision as of 13:37, 11 January 2007
EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects
EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects
Metadata Fields: Arclanguage - Base64 - Bigint - Boolean - Compound - Counter - Dataobjref - Date - Decimal - Email - Fields - Float - Id - Idci - Image - Int - Itemref - Keywords - Langid - Longtext - Longtext_counter - Multilang - Multipart - Name - Namedset - Pagerange - Recaptcha - Recaptcha3 - Relation - Search - Secret - Set - Storable - Subject - Subobject - Text - Time - Timestamp - Url - Uuid
Inheritance
Description
This is a very simple type of metadata field, which is used as a basis for several others.
It stores a string of text. The maximum possible length of the string is 255 bytes.
Note that 255 bytes does not mean 255 characters! UTF-8 can use 1 to 4 bytes to store a character. ASCII characters (a-z,0-9 etc) only use 1 byte so it will store 255 ASCII characters, but less of latin and much less of chinese.
Properties
| name | default | description |
| sql_index | 0 | as for Metadata but with a different default. |
| text_index | 1 | as for Metadata but with a different default. |
Required Phrases
None
Database
Text fields are stored in the database as
fieldname VARCHAR(255)