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Annotation Text Type and Views
Spatial users are responsible for populating these views. For each annotation text
object, you must insert an appropriate row into the USER_ANNOTATION_TEXT_
METADATA view. Oracle Spatial ensures that the ALL_ANNOTATION_TEXT_
METADATA view is also updated to reflect the rows that you insert into USER_
ANNOTATION_TEXT_METADATA.
The USER_ANNOTATION_TEXT_METADATA and ALL_ANNOTATION_TEXT_
METADATA views contain the same columns, as shown Table 3–1, except that the
USER_ANNOTATION_TEXT_METADATA view does not contain the OWNER
column. (The columns are listed in their order in the view definition.)
Table 3–1 Columns in the Annotation Text Metadata Views
Column Name Data Type Purpose
OWNER VARCHAR2(32) Owner of the table specified in the TABLE_NAME column (ALL_
ANNOTATION_TEXT_METADATA view only).
TABLE_NAME VARCHAR2(32) Name of the table containing the column of type ST_ANNOTATION_
TEXT.
COLUMN_NAME VARCHAR2(1024) Name of the column of type ST_ANNOTATION_TEXT.
TEXT_EXPRESSION VARCHAR2(4000) A value that can be used if text is not specified for a label. As explained
in the OpenGIS specification: "Text to place is first derived from the
contents of VALUE in the current element, if VALUE is not null.
Otherwise, text is derived from the first non-null preceding element
VALUE. If all preceding elements have null VALUE fields, VALUE is
derived from the TEXT_EXPRESSION in the metadata table."
TEXT_ATTRIBUTES VARCHAR2(4000) Default text display attributes (font family and size, horizontal and
vertical spacing, and so on) for the label text style and layout, unless
overridden in the PRIVATETEXTATTRIBUTES attribute of the ST_
ANNOTATION_TEXT constructor (described in Section 3.4.1). Use the
format specified in the "XML for Text Attributes" section of the
OpenGIS specification.
SQL Multimedia Type Support 3-9