Line2DFunctions.java
/*
* Copyright 2015 gregory.graham.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package nz.co.gregs.dbvolution.internal.oracle.aws;
import nz.co.gregs.dbvolution.internal.oracle.StringFunctions;
import nz.co.gregs.dbvolution.internal.FeatureAdd;
/**
*
* <p style="color: #F90;">Support DBvolution at
* <a href="http://patreon.com/dbvolution" target=new>Patreon</a></p>
*
* @author gregory.graham
*/
public enum Line2DFunctions implements FeatureAdd{
/**
*
*/
MAXY("NUMBER", "aLine VARCHAR", ""
+ " result NUMBER;\n"
+ " coord NUMBER;\n"
+ " pnt VARCHAR (4000);\n"
+ " polyAsText VARCHAR (4000);\n"
+ " textCoord VARCHAR (4000);\n"
+ "BEGIN\n"
+ " result := NULL;\n"
+ "\n"
+ " IF aLine IS NOT NULL\n"
+ " THEN\n"
+ " polyAsText := aLine;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('START: ' || polyAsText);\n"
+ " --'LINESTRING (2 3, 3 4, 4 5)'\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + "(polyAsText, '(');\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGBEFORE + "(polyAsText, ')');\n"
+ "\n"
+ " --'2 3, 3 4, 4 5'\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " WHILE polyAsText IS NOT NULL\n"
+ " LOOP\n"
+ " --DBMS_OUTPUT.PUT_LINE ('POLYASTEXT: ' || polyAsText);\n"
+ "\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ',');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ "\n"
+ " IF textCoord IS NULL\n"
+ " THEN\n"
+ " textCoord := polyAsText;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ " --4 5\n"
+ " END IF;\n"
+ "\n"
+ " --'2 3'\n"
+ " textCoord := " + StringFunctions.SUBSTRINGAFTER + " (textCoord, ' ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TONUMBER: ' || textCoord);\n"
+ "\n"
+ " --'3'\n"
+ "\n"
+ " IF LENGTH (textCoord) > 0\n"
+ " THEN\n"
+ " coord := NULL;\n"
+ " coord := TO_NUMBER (textCoord);\n"
+ " --DBMS_OUTPUT.PUT_LINE ('COORD: ' || coord);\n"
+ "\n"
+ " IF coord IS NOT NULL\n"
+ " THEN\n"
+ " IF result IS NULL OR result < coord\n"
+ " THEN\n"
+ " result := coord;\n"
+ " END IF;\n"
+ " END IF;\n"
+ " END IF;\n"
+ "\n"
+ " --DBMS_OUTPUT.PUT_LINE ('RESULT: ' || result);\n"
+ "\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, ', ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('polyAsText: ' || polyAsText);\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " END LOOP;\n"
+ " END IF;\n"
+ "\n"
+ " -- END IF;\n"
+ "\n"
+ " RETURN result;\n"
+ "END;"),
/**
*
*/
MAXX("number", "aLine VARCHAR", ""
+ " result NUMBER;\n"
+ " coord NUMBER;\n"
+ " pnt VARCHAR (4000);\n"
+ " polyAsText VARCHAR (4000);\n"
+ " textCoord VARCHAR (4000);\n"
+ "BEGIN\n"
+ " result := NULL;\n"
+ "\n"
+ " IF aLine IS NOT NULL\n"
+ " THEN\n"
+ " polyAsText := aLine;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('START: ' || polyAsText);\n"
+ " --'LINESTRING (2 3, 3 4, 4 5)'\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, '(');\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ')');\n"
+ "\n"
+ " --'2 3, 3 4, 4 5'\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " WHILE polyAsText IS NOT NULL\n"
+ " LOOP\n"
+ " --DBMS_OUTPUT.PUT_LINE ('POLYASTEXT: ' || polyAsText);\n"
+ "\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ',');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ "\n"
+ " IF textCoord IS NULL\n"
+ " THEN\n"
+ " textCoord := polyAsText;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ " --4 5\n"
+ " END IF;\n"
+ "\n"
+ " --'2 3'\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (textCoord, ' ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TONUMBER: ' || textCoord);\n"
+ "\n"
+ " --'3'\n"
+ "\n"
+ " IF LENGTH (textCoord) > 0\n"
+ " THEN\n"
+ " coord := NULL;\n"
+ " coord := TO_NUMBER (textCoord);\n"
+ " --DBMS_OUTPUT.PUT_LINE ('COORD: ' || coord);\n"
+ "\n"
+ " IF coord IS NOT NULL\n"
+ " THEN\n"
+ " IF result IS NULL OR result < coord\n"
+ " THEN\n"
+ " result := coord;\n"
+ " END IF;\n"
+ " END IF;\n"
+ " END IF;\n"
+ "\n"
+ " --DBMS_OUTPUT.PUT_LINE ('RESULT: ' || result);\n"
+ "\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, ', ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('polyAsText: ' || polyAsText);\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " END LOOP;\n"
+ " END IF;\n"
+ "\n"
+ " -- END IF;\n"
+ "\n"
+ " RETURN result;\n"
+ "END;"),
/**
*
*/
MINX("NUMBER", "aLine VARCHAR", ""
+ " result NUMBER;\n"
+ " coord NUMBER;\n"
+ " pnt VARCHAR (4000);\n"
+ " polyAsText VARCHAR (4000);\n"
+ " textCoord VARCHAR (4000);\n"
+ "BEGIN\n"
+ " result := NULL;\n"
+ "\n"
+ " IF aLine IS NOT NULL\n"
+ " THEN\n"
+ " polyAsText := aLine;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('START: ' || polyAsText);\n"
+ " --'LINESTRING (2 3, 3 4, 4 5)'\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, '(');\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ')');\n"
+ "\n"
+ " --'2 3, 3 4, 4 5'\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " WHILE polyAsText IS NOT NULL\n"
+ " LOOP\n"
+ " --DBMS_OUTPUT.PUT_LINE ('POLYASTEXT: ' || polyAsText);\n"
+ "\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ',');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ "\n"
+ " IF textCoord IS NULL\n"
+ " THEN\n"
+ " textCoord := polyAsText;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ " --4 5\n"
+ " END IF;\n"
+ "\n"
+ " --'2 3'\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (textCoord, ' ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TONUMBER: ' || textCoord);\n"
+ "\n"
+ " --'3'\n"
+ "\n"
+ " IF LENGTH (textCoord) > 0\n"
+ " THEN\n"
+ " coord := NULL;\n"
+ " coord := TO_NUMBER (textCoord);\n"
+ " --DBMS_OUTPUT.PUT_LINE ('COORD: ' || coord);\n"
+ "\n"
+ " IF coord IS NOT NULL\n"
+ " THEN\n"
+ " IF result IS NULL OR result > coord\n"
+ " THEN\n"
+ " result := coord;\n"
+ " END IF;\n"
+ " END IF;\n"
+ " END IF;\n"
+ "\n"
+ " --DBMS_OUTPUT.PUT_LINE ('RESULT: ' || result);\n"
+ "\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, ', ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('polyAsText: ' || polyAsText);\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " END LOOP;\n"
+ " END IF;\n"
+ "\n"
+ " -- END IF;\n"
+ "\n"
+ " RETURN result;\n"
+ "END;"),
/**
*
*/
MINY("number", "aLine VARCHAR", ""
+ " result NUMBER;\n"
+ " coord NUMBER;\n"
+ " pnt VARCHAR (4000);\n"
+ " polyAsText VARCHAR (4000);\n"
+ " textCoord VARCHAR (4000);\n"
+ "BEGIN\n"
+ " result := NULL;\n"
+ "\n"
+ " IF aLine IS NOT NULL\n"
+ " THEN\n"
+ " polyAsText := aLine;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('START: ' || polyAsText);\n"
+ " --'LINESTRING (2 3, 3 4, 4 5)'\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, '(');\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ')');\n"
+ "\n"
+ " --'2 3, 3 4, 4 5'\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " WHILE polyAsText IS NOT NULL\n"
+ " LOOP\n"
+ " --DBMS_OUTPUT.PUT_LINE ('POLYASTEXT: ' || polyAsText);\n"
+ "\n"
+ " textCoord := " + StringFunctions.SUBSTRINGBEFORE + " (polyAsText, ',');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ "\n"
+ " IF textCoord IS NULL\n"
+ " THEN\n"
+ " textCoord := polyAsText;\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TEXTCOORD: ' || textCoord);\n"
+ " --4 5\n"
+ " END IF;\n"
+ "\n"
+ " --'2 3'\n"
+ " textCoord := " + StringFunctions.SUBSTRINGAFTER + " (textCoord, ' ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('TONUMBER: ' || textCoord);\n"
+ "\n"
+ " --'3'\n"
+ "\n"
+ " IF LENGTH (textCoord) > 0\n"
+ " THEN\n"
+ " coord := NULL;\n"
+ " coord := TO_NUMBER (textCoord);\n"
+ " --DBMS_OUTPUT.PUT_LINE ('COORD: ' || coord);\n"
+ "\n"
+ " IF coord IS NOT NULL\n"
+ " THEN\n"
+ " IF result IS NULL OR result > coord\n"
+ " THEN\n"
+ " result := coord;\n"
+ " END IF;\n"
+ " END IF;\n"
+ " END IF;\n"
+ "\n"
+ " --DBMS_OUTPUT.PUT_LINE ('RESULT: ' || result);\n"
+ "\n"
+ " polyAsText := " + StringFunctions.SUBSTRINGAFTER + " (polyAsText, ', ');\n"
+ " --DBMS_OUTPUT.PUT_LINE ('polyAsText: ' || polyAsText);\n"
+ " --'3 4, 4 5'\n"
+ " --'4 5'\n"
+ " --NULL\n"
+ " END LOOP;\n"
+ " END IF;\n"
+ "\n"
+ " -- END IF;\n"
+ "\n"
+ " RETURN result;\n"
+ "END;"),
/**
*
*/
BOUNDINGBOX("VARCHAR", "lineString IN VARCHAR", ""
+ " result VARCHAR (2002);\n"
+ " maxx NUMBER;\n"
+ " minx NUMBER;\n"
+ " maxy NUMBER;\n"
+ " miny NUMBER;\n"
+ "BEGIN\n"
+ " IF lineString IS NULL\n"
+ " THEN\n"
+ " RETURN NULL;\n"
+ " ELSE\n"
+ " maxx := DBV_LINE2DFN_MAXX (lineString);\n"
+ " minx := DBV_LINE2DFN_MINX (lineString);\n"
+ " maxy := DBV_LINE2DFN_MAXY (lineString);\n"
+ " miny := DBV_LINE2DFN_MINY (lineString);\n"
+ " result := NULL;\n"
+ " result :=\n"
+ " 'POLYGON (('\n"
+ " || minx\n"
+ " || ' '\n"
+ " || miny\n"
+ " || ', '\n"
+ " || maxx\n"
+ " || ' '\n"
+ " || miny\n"
+ " || ', '\n"
+ " || maxx\n"
+ " || ' '\n"
+ " || maxy\n"
+ " || ', '\n"
+ " || minx\n"
+ " || ' '\n"
+ " || maxy\n"
+ " || ', '\n"
+ " || minx\n"
+ " || ' '\n"
+ " || miny\n"
+ " || '))';\n"
+ " RETURN result;\n"
+ " END IF;\n"
+ "END;"),
/**
*
*/
INTERSECTSLINE2D("NUMBER", "firstLine IN VARCHAR, secondLine IN VARCHAR", " p0x NUMBER;\n"
+ " p0y NUMBER;\n"
+ " p1x NUMBER;\n"
+ " p1y NUMBER;\n"
+ " p2x NUMBER;\n"
+ " p2y NUMBER;\n"
+ " p3x NUMBER;\n"
+ " p3y NUMBER;\n"
+ " s1_x NUMBER;\n"
+ " s1_y NUMBER;\n"
+ " s2_x NUMBER;\n"
+ " s2_y NUMBER;\n"
+ " s NUMBER;\n"
+ " t NUMBER;\n"
+ " polyAsText VARCHAR (4000);\n"
+ " poly2AsText VARCHAR (4000);\n"
+ " pointAsText VARCHAR (4000);\n"
+ "BEGIN\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('STARTING INTERSECTS... ');\n"
+ "\n"
+ " IF (firstLine IS NULL OR secondLine IS NULL)\n"
+ " THEN\n"
+ " RETURN NULL;\n"
+ " END IF;\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " polyAsText := firstLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT POLY: ' || polyAsText);\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, '(');\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT POLY: ' || polyAsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (polyAsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST WHILE LOOP... ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p0x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p0y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT: ' || pointAsText);\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT FINAL: ' || pointAsText);\n"
+ " --'3 4'\n"
+ " p1x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p1y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " poly2AsText := secondLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POLY: ' || poly2AsText);\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, '(');\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT SECOND POLY: ' || poly2AsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (poly2AsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT SECOND POLY: ' || poly2AsText);\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('THIRD POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p2x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p2y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FOURTH POINT: ' || pointAsText);\n"
+ "\n"
+ " --'3 4'\n"
+ " p3x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p3y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " --double s1_x, s1_y, s2_x, s2_y;\n"
+ " --double i_x, i_y;\n"
+ " s1_x := p1x - p0x;\n"
+ " s1_y := p1y - p0y;\n"
+ " s2_x := p3x - p2x;\n"
+ " s2_y := p3y - p2y;\n"
+ " --double s, t;\n"
+ " s :=\n"
+ " (-s1_y * (p0x - p2x) + s1_x * (p0y - p2y))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ " t :=\n"
+ " (s2_x * (p0y - p2y) - s2_y * (p0x - p2x))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ "\n"
+ " IF (s >= 0 AND s <= 1 AND t >= 0 AND t <= 1)\n"
+ " THEN\n"
+ " -- Collision detected\n"
+ " --i_x = p0x + (t * s1_x);\n"
+ " --i_y = p0y + (t * s1_y);\n"
+ " RETURN 1;\n"
+ " END IF;\n"
+ "\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " -- No Collision\n"
+ " RETURN 0;\n"
+ "END;"),
/**
*
*/
INTERSECTNWLINE2D("VARCHAR", "firstLine IN VARCHAR, secondLine IN VARCHAR", ""
+ " p0x NUMBER;\n"
+ " p0y NUMBER;\n"
+ " p1x NUMBER;\n"
+ " p1y NUMBER;\n"
+ " p2x NUMBER;\n"
+ " p2y NUMBER;\n"
+ " p3x NUMBER;\n"
+ " p3y NUMBER;\n"
+ " s1_x NUMBER;\n"
+ " s1_y NUMBER;\n"
+ " s2_x NUMBER;\n"
+ " s2_y NUMBER;\n"
+ " s NUMBER;\n"
+ " i_x NUMBER;\n"
+ " i_y NUMBER;\n"
+ " t NUMBER;\n"
+ " polyAsText VARCHAR (4000);\n"
+ " poly2AsText VARCHAR (4000);\n"
+ " pointAsText VARCHAR (4000);\n"
+ "BEGIN\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('STARTING INTERSECTS... ');\n"
+ "\n"
+ " IF (firstLine IS NULL OR secondLine IS NULL)\n"
+ " THEN\n"
+ " RETURN '';\n"
+ " END IF;\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " polyAsText := firstLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT POLY: ' || polyAsText);\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, '(');\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT POLY: ' || polyAsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (polyAsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST WHILE LOOP... ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p0x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p0y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT: ' || pointAsText);\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT FINAL: ' || pointAsText);\n"
+ " --'3 4'\n"
+ " p1x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p1y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " poly2AsText := secondLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POLY: ' || poly2AsText);\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, '(');\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT SECOND POLY: ' || poly2AsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (poly2AsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT SECOND POLY: ' || poly2AsText);\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('THIRD POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p2x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p2y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FOURTH POINT: ' || pointAsText);\n"
+ "\n"
+ " --'3 4'\n"
+ " p3x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p3y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " --double s1_x, s1_y, s2_x, s2_y;\n"
+ " --double i_x, i_y;\n"
+ " s1_x := p1x - p0x;\n"
+ " s1_y := p1y - p0y;\n"
+ " s2_x := p3x - p2x;\n"
+ " s2_y := p3y - p2y;\n"
+ " --double s, t;\n"
+ " s :=\n"
+ " (-s1_y * (p0x - p2x) + s1_x * (p0y - p2y))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ " t :=\n"
+ " (s2_x * (p0y - p2y) - s2_y * (p0x - p2x))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ "\n"
+ " IF (s >= 0 AND s <= 1 AND t >= 0 AND t <= 1)\n"
+ " THEN\n"
+ " -- Collision detected\n"
+ " i_x := p0x + (t * s1_x);\n"
+ " i_y := p0y + (t * s1_y);\n"
+ " RETURN 'POINT ('||i_x||' '||i_y||')';\n"
+ " END IF;\n"
+ "\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " -- No Collision\n"
+ " RETURN '';\n"
+ "END;"),
/**
*
*/
ALLINTERSECTSL2D("VARCHAR", "firstLine IN VARCHAR, secondLine IN VARCHAR", ""
+ " p0x NUMBER;\n"
+ " p0y NUMBER;\n"
+ " p1x NUMBER;\n"
+ " p1y NUMBER;\n"
+ " p2x NUMBER;\n"
+ " p2y NUMBER;\n"
+ " p3x NUMBER;\n"
+ " p3y NUMBER;\n"
+ " s1_x NUMBER;\n"
+ " s1_y NUMBER;\n"
+ " s2_x NUMBER;\n"
+ " s2_y NUMBER;\n"
+ " s NUMBER;\n"
+ " i_x NUMBER;\n"
+ " i_y NUMBER;\n"
+ " t NUMBER;\n"
+ " collisionDetected NUMBER := 0;\n"
+ " polyAsText VARCHAR (4000);\n"
+ " poly2AsText VARCHAR (4000);\n"
+ " pointAsText VARCHAR (4000);\n"
+ " separator VARCHAR (4000);\n"
+ " result VARCHAR (4000) := 'MULTIPOINT (';\n"
+ "BEGIN\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('STARTING INTERSECTS... ');\n"
+ "\n"
+ " IF (firstLine IS NULL OR secondLine IS NULL)\n"
+ " THEN\n"
+ " RETURN '';\n"
+ " END IF;\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " polyAsText := firstLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT POLY: ' || polyAsText);\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, '(');\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT POLY: ' || polyAsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (polyAsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST WHILE LOOP... ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (polyAsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FIRST POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p0x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p0y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT: ' || pointAsText);\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POINT FINAL: ' || pointAsText);\n"
+ " --'3 4'\n"
+ " p1x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p1y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ "\n"
+ " --'LINESTRING (2 3, 3 4)'\n"
+ " poly2AsText := secondLine;\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SECOND POLY: ' || poly2AsText);\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, '(');\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ')');\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('SHORT SECOND POLY: ' || poly2AsText);\n"
+ "\n"
+ " --'2 3, 3 4'\n"
+ " WHILE INSTR (poly2AsText, ',') > 0\n"
+ " LOOP\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('CURRENT SECOND POLY: ' || poly2AsText);\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (poly2AsText, ',');\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('THIRD POINT: ' || pointAsText);\n"
+ " --'2 3'\n"
+ " p2x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p2y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ "\n"
+ " IF (INSTR (pointAsText, ',') > 0)\n"
+ " THEN\n"
+ " pointAsText := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ',');\n"
+ " END IF;\n"
+ "\n"
+ " -- DBMS_OUTPUT.PUT_LINE ('FOURTH POINT: ' || pointAsText);\n"
+ "\n"
+ " --'3 4'\n"
+ " p3x := DBV_STRINGFN_SUBSTRINGBEFORE (pointAsText, ' ');\n"
+ " p3y := DBV_STRINGFN_SUBSTRINGAFTER (pointAsText, ' ');\n"
+ " --double s1_x, s1_y, s2_x, s2_y;\n"
+ " --double i_x, i_y;\n"
+ " s1_x := p1x - p0x;\n"
+ " s1_y := p1y - p0y;\n"
+ " s2_x := p3x - p2x;\n"
+ " s2_y := p3y - p2y;\n"
+ " --double s, t;\n"
+ " s :=\n"
+ " (-s1_y * (p0x - p2x) + s1_x * (p0y - p2y))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ " t :=\n"
+ " (s2_x * (p0y - p2y) - s2_y * (p0x - p2x))\n"
+ " / (-s2_x * s1_y + s1_x * s2_y);\n"
+ "\n"
+ " IF (s >= 0 AND s <= 1 AND t >= 0 AND t <= 1)\n"
+ " THEN\n"
+ " -- Collision detected\n"
+ " i_x := p0x + (t * s1_x);\n"
+ " i_y := p0y + (t * s1_y);\n"
+ " collisionDetected := 1;\n"
+ " result := result || separator || '(' || i_x || ' ' || i_y || ')';\n"
+ " separator := ' ';\n"
+ " END IF;\n"
+ "\n"
+ " poly2AsText := DBV_STRINGFN_SUBSTRINGAFTER (poly2AsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " polyAsText := DBV_STRINGFN_SUBSTRINGAFTER (polyAsText, ', ');\n"
+ " END LOOP;\n"
+ "\n"
+ " IF (collisionDetected = 0)\n"
+ " THEN\n"
+ " -- No Collision\n"
+ " RETURN '';\n"
+ " ELSE\n"
+ " RETURN result || ')';\n"
+ " END IF;\n"
+ "END;");
private final String returnType;
private final String parameters;
private final String code;
Line2DFunctions(String returnType, String parameters, String code) {
this.returnType = returnType;
this.parameters = parameters;
this.code = code;
}
@Override
public String toString() {
return "DBV_LINE2DFN_" + name();
}
// public void add(Statement stmt) throws ExceptionDuringDatabaseFeatureSetup {
// try {
// if (!this.code.isEmpty()) {
// final String createFn = "CREATE OR REPLACE FUNCTION " + this + "(" + this.parameters + ")\n"
// + " RETURN " + this.returnType
// + " AS \n" + "\n" + this.code;
// stmt.execute(createFn);
// }
// } catch (SQLException ex) {
// throw new ExceptionDuringDatabaseFeatureSetup("FAILED TO ADD FEATURE: "+name(), ex);
// }
// }
@Override
public String featureName() {
return name();
}
@Override
public String[] createSQL() {
if (!this.code.isEmpty()) {
return new String[]{
"CREATE OR REPLACE FUNCTION " + this + "(" + this.parameters + ")\n"
+ " RETURN " + this.returnType
+ " AS \n" + "\n" + this.code
};
}
return new String[]{};
}
}