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Commit261c7d4

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Revive line type
Change the input/output format to {A,B,C}, to match the internalrepresentation.Complete the implementations of line_in, line_out, line_recv, line_send.Remove comments and error messages about the line type not beingimplemented. Add regression tests for existing line operators andfunctions.Reviewed-by: rui hua <365507506hua@gmail.com>Reviewed-by: Álvaro Herrera <alvherre@2ndquadrant.com>Reviewed-by: Jeevan Chalke <jeevan.chalke@enterprisedb.com>
1 parent0ac5e5a commit261c7d4

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13 files changed

+503
-153
lines changed

13 files changed

+503
-153
lines changed

‎doc/src/sgml/datatype.sgml

Lines changed: 36 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -3051,9 +3051,7 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
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<para>
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Geometric data types represent two-dimensional spatial
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objects. <xref linkend="datatype-geo-table"> shows the geometric
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types available in <productname>PostgreSQL</productname>. The
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most fundamental type, the point, forms the basis for all of the
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other types.
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types available in <productname>PostgreSQL</productname>.
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</para>
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<table id="datatype-geo-table">
@@ -3063,8 +3061,8 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
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<row>
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<entry>Name</entry>
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<entry>Storage Size</entry>
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<entry>Representation</entry>
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<entry>Description</entry>
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<entry>Representation</entry>
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</row>
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</thead>
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<tbody>
@@ -3077,8 +3075,8 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
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<row>
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<entry><type>line</type></entry>
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<entry>32 bytes</entry>
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<entry>Infinite line (not fully implemented)</entry>
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<entry>((x1,y1),(x2,y2))</entry>
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<entry>Infinite line</entry>
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<entry>{A,B,C}</entry>
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</row>
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<row>
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<entry><type>lseg</type></entry>
@@ -3152,6 +3150,38 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
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</para>
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</sect2>
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<sect2>
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<title>Lines</title>
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<indexterm>
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<primary>line</primary>
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</indexterm>
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<para>
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Lines (<type>line</type>) are represented by the linear equation Ax + By
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+ C = 0, where A and B are not both zero. Values of
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type <type>line</type> is input and output in the following form:
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<synopsis>
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{ <replaceable>A</replaceable>, <replaceable>B</replaceable>, <replaceable>C</replaceable> }
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</synopsis>
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Alternatively, any of the following forms can be used for input:
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<synopsis>
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[ ( <replaceable>x1</replaceable> , <replaceable>y1</replaceable> ) , ( <replaceable>x2</replaceable> , <replaceable>y2</replaceable> ) ]
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( ( <replaceable>x1</replaceable> , <replaceable>y1</replaceable> ) , ( <replaceable>x2</replaceable> , <replaceable>y2</replaceable> ) )
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( <replaceable>x1</replaceable> , <replaceable>y1</replaceable> ) , ( <replaceable>x2</replaceable> , <replaceable>y2</replaceable> )
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<replaceable>x1</replaceable> , <replaceable>y1</replaceable> , <replaceable>x2</replaceable> , <replaceable>y2</replaceable>
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</synopsis>
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where
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<literal>(<replaceable>x1</replaceable>,<replaceable>y1</replaceable>)</literal>
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and
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<literal>(<replaceable>x2</replaceable>,<replaceable>y2</replaceable>)</literal>
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are two (different) points on the line.
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</para>
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</sect2>
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<sect2>
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<title>Line Segments</title>
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‎doc/src/sgml/func.sgml

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Original file line numberDiff line numberDiff line change
@@ -8122,6 +8122,12 @@ CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple
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<entry>polygon to circle</entry>
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<entry><literal>circle(polygon '((0,0),(1,1),(2,0))')</literal></entry>
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</row>
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<row>
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<entry><literal><function>line(<type>point</type>, <type>point</type>)</function></literal></entry>
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<entry><type>line</type></entry>
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<entry>points to line</entry>
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<entry><literal>line(point '(-1,0)', point '(1,0)')</literal></entry>
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</row>
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<row>
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<entry>
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<indexterm>

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