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maporaclespatial.c
3997 lines (3352 loc) · 149 KB
/
maporaclespatial.c
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/******************************************************************************
* Project: MapServer
* Purpose: Native access to Oracle Spatial (SDO) data.
* Author: Fernando Simon (fsimon@univali.br)
* Rodrigo Becke Cabral
* Adriana Gomes Alves
*
* Notes: Developed under several funding agreements:
*
* 1) n.45/00 between CTTMAR/UNIVALI (www.cttmar.univali.br)
* and CEPSUL/IBAMA (www.ibama.gov.br)
*
* 2) CNPq (www.cnpq.br) under process 401263.03-7
*
* 3) FUNCITEC (www.funcitec.rct-sc.br) under process FCTP1523-031
*
******************************************************************************
* Copyright (c) 1996-2008 Regents of the University of Minnesota.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include "mapserver.h"
#include "maptime.h"
#include <assert.h>
#if defined(USE_ORACLESPATIAL) || defined(USE_ORACLE_PLUGIN)
#include <oci.h>
#include <ctype.h>
#define ARRAY_SIZE 1024
#define QUERY_SIZE 1
#define TEXT_SIZE 4000 /* ticket #2260 */
#define TYPE_OWNER "MDSYS"
#define SDO_GEOMETRY TYPE_OWNER".SDO_GEOMETRY"
#define SDO_ORDINATE_ARRAY TYPE_OWNER".SDO_ORDINATE_ARRAY"
#define SDO_GEOMETRY_LEN strlen( SDO_GEOMETRY )
#define FUNCTION_FILTER 1
#define FUNCTION_RELATE 2
#define FUNCTION_GEOMRELATE 3
#define FUNCTION_NONE 4
#define VERSION_8i 1
#define VERSION_9i 2
#define VERSION_10g 3
#define TOLERANCE 0.001
#define NULLERRCODE 1405
#define TABLE_NAME_SIZE 2000
typedef
struct {
OCINumber x;
OCINumber y;
OCINumber z;
} SDOPointObj;
typedef
struct {
OCINumber gtype;
OCINumber srid;
SDOPointObj point;
OCIArray *elem_info;
OCIArray *ordinates;
} SDOGeometryObj;
typedef
struct {
OCIInd _atomic;
OCIInd x;
OCIInd y;
OCIInd z;
} SDOPointInd;
typedef
struct {
OCIInd _atomic;
OCIInd gtype;
OCIInd srid;
SDOPointInd point;
OCIInd elem_info;
OCIInd ordinates;
} SDOGeometryInd;
typedef
text item_text[TEXT_SIZE];
typedef
item_text item_text_array[ARRAY_SIZE];
typedef
item_text item_text_array_query[QUERY_SIZE];
typedef
ub2 query_dtype[ARRAY_SIZE];
typedef
struct {
/*Oracle handlers (global to connection)*/
OCIEnv *envhp;
OCIError *errhp;
OCISvcCtx *svchp;
int last_oci_status;
text last_oci_error[2048];
/* This references counter is to avoid the cache freed if there are other layers that could use it */
int ref_count;
} msOracleSpatialHandler;
typedef
struct {
/* Oracle data handlers (global to connection) */
OCIDescribe *dschp;
OCIType *tdo;
} msOracleSpatialDataHandler;
typedef
struct {
OCIStmt *stmthp;
/* fetch data buffer */
ub4 rows_count; /* total number of rows (so far) within cursor */
ub4 row_num; /* current row index within cursor results */
ub4 rows_fetched; /* total number of rows fetched into our buffer */
ub4 row; /* current row index within our buffer */
item_text_array *items; /* items buffer */
item_text_array_query *items_query; /* items buffer */
SDOGeometryObj *obj[ARRAY_SIZE]; /* spatial object buffer */
SDOGeometryInd *ind[ARRAY_SIZE]; /* object indicator (null) buffer */
int uniqueidindex; /*allows to keep whic attribute id index is used as unique id*/
} msOracleSpatialStatement;
typedef
struct {
/* oracle handlers */
msOracleSpatialHandler *orahandlers;
/* oracle data handlers */
msOracleSpatialDataHandler *oradatahandlers;
msOracleSpatialStatement *orastmt;
/* Following items are setup by WhichShapes
* used by NextShape, ResultGetShape
* disposed by CloseLayer (if set)
*/
msOracleSpatialStatement *orastmt2;
/* Driver handling of pagination, enabled by default */
int paging;
} msOracleSpatialLayerInfo;
static OCIType *ordinates_tdo = NULL;
static OCIArray *ordinates;
/* local prototypes */
static int TRY( msOracleSpatialHandler *hand, sword status );
static int ERROR( char *routine, msOracleSpatialHandler *hand, msOracleSpatialDataHandler *dthand );
static void msSplitLogin( char *connection, mapObj *map, char **username, char **password, char **dblink );
static int msSplitData( char *data, char **geometry_column_name, char **table_name, char **unique, char **srid, char **indexfield, int *function, int * version);
static void msOCICloseConnection( void *layerinfo );
static msOracleSpatialHandler *msOCISetHandlers( char *username, char *password, char *dblink );
static int msOCISetDataHandlers( msOracleSpatialHandler *hand, msOracleSpatialDataHandler *dthand );
static void msOCICloseDataHandlers ( msOracleSpatialDataHandler *dthand );
static void msOCICloseHandlers( msOracleSpatialHandler *hand );
static void msOCIClearLayerInfo( msOracleSpatialLayerInfo *layerinfo );
static int msOCIOpenStatement( msOracleSpatialHandler *hand, msOracleSpatialStatement *sthand );
static void msOCIFinishStatement( msOracleSpatialStatement *sthand );
static int msOCIGet2DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt );
static int msOCIGet3DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt );
static int msOCIGet4DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt );
static int msOCIConvertCircle( pointObj *pt );
static void osFilteritem(layerObj *layer, int function, char *query_str, size_t size, int mode);
static void osAggrGetExtent(layerObj *layer, char *query_str, size_t size, char *geom_column_name, char *table_name);
static void osConvexHullGetExtent(layerObj *layer, char *query_str, size_t size, char *geom_column_name, char *table_name);
static void osGeodeticData(int function, int version, char *query_str, size_t size, char *geom_column_name, char *index_column_name, char *srid, rectObj rect);
static void osNoGeodeticData(int function, int version, char *query_str, size_t size, char *geom_column_name, char *index_column_name, char *srid, rectObj rect);
static double osCalculateArcRadius(pointObj *pnt);
static void osCalculateArc(pointObj *pnt, int data3d, int data4d, double area, double radius, double npoints, int side, lineObj arcline, shapeObj *shape);
static void osGenerateArc(shapeObj *shape, lineObj arcline, lineObj points, int i, int n, int data3d, int data4d);
static void osShapeBounds ( shapeObj *shp );
static void osCloneShape(shapeObj *shape, shapeObj *newshape, int data3d, int data4d);
static void osPointCluster(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj points, int interpretation, int data3d, int data4d);
static void osPoint(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj points, pointObj *pnt, int data3d, int data4d);
static void osClosedPolygon(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj points, int elem_type, int data3d, int data4d);
static void osRectangle(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj points, pointObj *pnt, int data3d, int data4d);
static void osCircle(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj points, pointObj *pnt, int data3d, int data4d);
static void osArcPolygon(msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, int start, int end, lineObj arcpoints,int elem_type,int data3d, int data4d);
static int osGetOrdinates(msOracleSpatialDataHandler *dthand, msOracleSpatialHandler *hand, shapeObj *shape, SDOGeometryObj *obj, SDOGeometryInd *ind);
static int osCheck2DGtype(int pIntGtype);
static int osCheck3DGtype(int pIntGtype);
static int osCheck4DGtype(int pIntGtype);
/******************************************************************************
* Local Helper Functions *
******************************************************************************/
/* if an error ocurred call msSetError, sets last_oci_status to MS_FAILURE and return 0;
* otherwise returns 1 */
static int TRY( msOracleSpatialHandler *hand, sword status )
{
sb4 errcode = 0;
if (hand->last_oci_status == MS_FAILURE)
return 0; /* error from previous call */
switch (status) {
case OCI_SUCCESS_WITH_INFO:
case OCI_ERROR:
OCIErrorGet((dvoid *)hand->errhp, (ub4)1, (text *)NULL, &errcode, hand->last_oci_error, (ub4)sizeof(hand->last_oci_error), OCI_HTYPE_ERROR );
if (errcode == NULLERRCODE) {
hand->last_oci_error[0] = (text)'\0';
return 1;
}
hand->last_oci_error[sizeof(hand->last_oci_error)-1] = 0; /* terminate string!? */
break;
case OCI_NEED_DATA:
strlcpy( (char *)hand->last_oci_error, "OCI_NEED_DATA", sizeof(hand->last_oci_error));
break;
case OCI_INVALID_HANDLE:
strlcpy( (char *)hand->last_oci_error, "OCI_INVALID_HANDLE", sizeof(hand->last_oci_error));
break;
case OCI_STILL_EXECUTING:
((char*)hand->last_oci_error)[sizeof(hand->last_oci_error)-1] = 0;
break;
case OCI_CONTINUE:
strlcpy( (char *)hand->last_oci_error, "OCI_CONTINUE", sizeof(hand->last_oci_error));
break;
default:
return 1; /* no error */
}
/* if I got here, there was an error */
hand->last_oci_status = MS_FAILURE;
return 0; /* error! */
}
OCIType *get_tdo(char *typename, msOracleSpatialHandler *hand, msOracleSpatialDataHandler *dthand )
{
OCIParam *paramp = NULL;
OCIRef *type_ref = NULL;
OCIType *tdoe = NULL;
int success = 0;
success = TRY( hand, OCIDescribeAny(hand->svchp, hand->errhp, (text *)typename, (ub4)strlen((char *)typename), OCI_OTYPE_NAME, (ub1)1, (ub1)OCI_PTYPE_TYPE, dthand->dschp))
&&TRY( hand, OCIAttrGet((dvoid *)dthand->dschp, (ub4)OCI_HTYPE_DESCRIBE, (dvoid *)¶mp, (ub4 *)0, (ub4)OCI_ATTR_PARAM, hand->errhp))
&&TRY( hand, OCIAttrGet((dvoid *)paramp, (ub4)OCI_DTYPE_PARAM, (dvoid *)&type_ref, (ub4 *)0, (ub4)OCI_ATTR_REF_TDO, hand->errhp))
&&TRY( hand, OCIObjectPin(hand->envhp, hand->errhp, type_ref, (OCIComplexObject *)0, OCI_PIN_ANY, OCI_DURATION_SESSION, OCI_LOCK_NONE, (dvoid **)&tdoe));
if (success)
return tdoe;
/* if failure, return NULL*/
return NULL;
}
/* check last_oci_status for MS_FAILURE (set by TRY()) if an error ocurred return 1;
* otherwise, returns 0 */
static int ERROR( char *routine, msOracleSpatialHandler *hand, msOracleSpatialDataHandler *dthand )
{
if (hand->last_oci_status == MS_FAILURE) {
/* there was an error */
msSetError( MS_ORACLESPATIALERR, "OracleSpatial server returned an error, check logs for more details", routine );
msDebug("OracleSpatial server returned an error in funtion (%s): %s.\n", routine, (char*)hand->last_oci_error );
/* reset error flag */
hand->last_oci_status = MS_SUCCESS;
return 1; /* error processed */
} else
return 0; /* no error */
}
/* break layer->connection (username/password@dblink) into username, password and dblink */
static void msSplitLogin( char *connection, mapObj *map, char **username, char **password, char **dblink )
{
char *src, *tgt, *conn_decrypted;
size_t buffer_size = 0;
/* bad 'connection' */
if (connection == NULL) return;
buffer_size = strlen(connection)+1;
*username = (char*)malloc(buffer_size);
*password = (char*)malloc(buffer_size);
*dblink = (char*)malloc(buffer_size);
/* clearup */
**username = **password = **dblink = 0;
/* Decrypt any encrypted token */
conn_decrypted = msDecryptStringTokens(map, connection);
if (conn_decrypted == NULL) return;
/* ok, split connection */
for( tgt=*username, src=conn_decrypted; *src; src++, tgt++ )
if (*src=='/' || *src=='@')
break;
else
*tgt = *src;
*tgt = 0;
if (*src == '/') {
for( tgt=*password, ++src; *src; src++, tgt++ )
if (*src == '@')
break;
else
*tgt = *src;
*tgt = 0;
}
if (*src == '@') {
strlcpy( *dblink, ++src, buffer_size);
}
msFree(conn_decrypted);
}
/* break layer->data into geometry_column_name, table_name and srid */
static int msSplitData( char *data, char **geometry_column_name, char **table_name, char **unique, char **srid, char **indexfield, int *function, int *version )
{
char *tok_from = "from";
char *tok_using = "using";
char *tok_unique = "unique";
char *tok_srid = "srid";
char *tok_indexfield="indexfield";
char *tok_version = "version";
char data_version[4] = "";
char tok_function[11] = "";
int parenthesis, i;
char *src = data, *tgt;
int table_name_size = TABLE_NAME_SIZE;
size_t buffer_size = 0;
/* bad 'data' */
if (data == NULL)
return 0;
buffer_size = strlen(data)+1;
*geometry_column_name = (char*)malloc(buffer_size);
*unique = (char*)malloc(buffer_size);
*srid = (char*)malloc(buffer_size);
*indexfield=(char*)malloc(buffer_size);
/* clearup */
**geometry_column_name = **table_name = 0;
/* parsing 'geometry_column_name' */
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( tgt=*geometry_column_name; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
/* parsing 'from' */
for( ; *src && isspace( *src ); src++ ) ; /* skip blanks */
for( ; *src && *tok_from && tolower(*src)==*tok_from; src++, tok_from++ );
if (*tok_from != '\0')
return 0;
/* parsing 'table_name' or '(SELECT stmt)' */
i = 0;
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( tgt=*table_name, parenthesis=0; *src; src++, tgt++, ++i ) {
if (*src == '(')
parenthesis++;
else if (*src == ')')
parenthesis--;
else if (parenthesis==0 && isspace( *src ))
break; /* stop on spaces */
/* double the size of the table_name array if necessary */
if (i == table_name_size) {
table_name_size *= 2;
*table_name = (char *) realloc(*table_name,sizeof(char *) * table_name_size);
}
*tgt = *src;
}
*tgt = 0;
strlcpy( *unique, "", buffer_size);
strlcpy( *srid, "NULL", buffer_size);
strlcpy( *indexfield, "", buffer_size);
*function = -1;
*version = -1;
/* parsing 'unique' */
for( ; *src && isspace( *src ); src++ ) ; /* skip blanks */
if (*src != '\0') {
/* parse 'using' */
for( ; *src && *tok_using && tolower(*src)==*tok_using; src++, tok_using++ );
if (*tok_using != '\0')
return 0;
/* parsing 'unique' */
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( ; *src && *tok_unique && tolower(*src)==*tok_unique; src++, tok_unique++ );
if (*tok_unique == '\0') {
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
if (*src == '\0')
return 0;
for( tgt=*unique; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
if (*tok_unique != '\0')
return 0;
}
/* parsing 'srid' */
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( ; *src && *tok_srid && tolower(*src)==*tok_srid; src++, tok_srid++ );
if (*tok_srid == '\0') {
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
if (*src == '\0')
return 0;
for( tgt=*srid; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
if (*tok_srid != '\0')
return 0;
}
/* parsing 'indexfield' */
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( ; *src && *tok_indexfield && tolower(*src)==*tok_indexfield; src++, tok_indexfield++ );
if (*tok_indexfield == '\0') {
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
if (*src == '\0')
return 0;
for( tgt=*indexfield; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
if (*tok_indexfield != '\0')
return 0;
}
/*parsing function/version */
for( ; *src && isspace( *src ); src++ );
if (*src != '\0') {
for( tgt=tok_function; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
}
/*Upcase conversion for the FUNCTION/VERSION token*/
for (i=0; tok_function[i] != '\0'; i++)
tok_function[i] = toupper(tok_function[i]);
if (strcmp(tok_function, "VERSION")) {
if (!strcmp(tok_function, "FILTER") || !strcmp(tok_function, ""))
*function = FUNCTION_FILTER;
else if(!strcmp(tok_function, "RELATE"))
*function = FUNCTION_RELATE;
else if (!strcmp(tok_function,"GEOMRELATE"))
*function = FUNCTION_GEOMRELATE;
else if (!strcmp(tok_function,"NONE"))
*function = FUNCTION_NONE;
else {
*function = -1;
return 0;
}
/*parsing VERSION token when user defined one function*/
for( ; *src && isspace( *src ); src++ );
for( ; *src && *tok_version && tolower(*src)==*tok_version; src++, tok_version++ );
} else {
for(tgt = "VERSION"; *tgt && *tok_version && toupper(*tgt)==toupper(*tok_version); tgt++, tok_version++ );
*function = FUNCTION_FILTER;
}
/*parsing version*/
if (*tok_version == '\0') {
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
for( tgt=data_version; *src; src++, tgt++ )
if (isspace( *src ))
break;
else
*tgt = *src;
*tgt = 0;
for (i=0; data_version[i] != '\0'; i++)
data_version[i] = tolower(data_version[i]);
if (!strcmp(data_version, "8i"))
*version = VERSION_8i;
else if(!strcmp(data_version, "9i"))
*version = VERSION_9i;
else if (!strcmp(data_version, "10g"))
*version = VERSION_10g;
else
return 0;
}
}
/* finish parsing */
for( ; *src && isspace( *src ); src++ ); /* skip blanks */
return (*src == '\0');
}
/******************************************************************************
* OCI Helper Functions *
******************************************************************************/
/* create statement handle from database connection */
static int msOCIOpenStatement( msOracleSpatialHandler *hand, msOracleSpatialStatement *sthand)
{
int success = 0;
char * cmd = "";
/* allocate stmthp */
success = TRY( hand, OCIHandleAlloc( (dvoid *)hand->envhp, (dvoid **)&sthand->stmthp, (ub4)OCI_HTYPE_STMT, (size_t)0, (dvoid **)0 ) );
sthand->rows_count = 0;
sthand->row_num = 0;
sthand->rows_fetched = 0;
sthand->row = 0;
sthand->items = NULL;
sthand->items_query = NULL;
/* setting environment values to enable time parsing */
cmd = "alter session set NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss'";
success = TRY(hand, OCIStmtPrepare( sthand->stmthp, hand->errhp, (const OraText*)cmd, (ub4) strlen(cmd), (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT));
success = TRY(hand, OCIStmtExecute( hand->svchp, sthand->stmthp, hand->errhp, (ub4)ARRAY_SIZE, (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL, (ub4)OCI_DEFAULT ) );
cmd = "alter session set NLS_TIMESTAMP_TZ_FORMAT='yyyy-mm-dd hh24:mi:ss'";
success = TRY(hand, OCIStmtPrepare( sthand->stmthp, hand->errhp, (const OraText*)cmd, (ub4) strlen(cmd), (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT));
success = TRY(hand, OCIStmtExecute( hand->svchp, sthand->stmthp, hand->errhp, (ub4)ARRAY_SIZE, (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL, (ub4)OCI_DEFAULT ) );
cmd = "alter session set NLS_TIMESTAMP_FORMAT = 'yyyy-mm-dd hh24:mi:ss'";
success = TRY(hand, OCIStmtPrepare( sthand->stmthp, hand->errhp, (const OraText*)cmd, (ub4) strlen(cmd), (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT));
success = TRY(hand, OCIStmtExecute( hand->svchp, sthand->stmthp, hand->errhp, (ub4)ARRAY_SIZE, (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL, (ub4)OCI_DEFAULT ) );
cmd = "alter session set time_zone = 'GMT'";
success = TRY(hand, OCIStmtPrepare( sthand->stmthp, hand->errhp, (const OraText*)cmd, (ub4) strlen(cmd), (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT));
success = TRY(hand, OCIStmtExecute( hand->svchp, sthand->stmthp, hand->errhp, (ub4)ARRAY_SIZE, (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL, (ub4)OCI_DEFAULT ) );
/* fprintf(stderr, "Creating statement handle at %p\n", sthand->stmthp); */
return success;
}
/* create statement handle from database connection */
static void msOCIFinishStatement( msOracleSpatialStatement *sthand )
{
if(sthand != NULL) {
/* fprintf(stderr, "Freeing statement handle at %p\n", sthand->stmthp); */
if (sthand->stmthp != NULL)
OCIHandleFree( (dvoid *)sthand->stmthp, (ub4)OCI_HTYPE_STMT );
if (sthand->items != NULL)
free( sthand->items );
if (sthand->items_query != NULL)
free( sthand->items_query );
memset(sthand, 0, sizeof( msOracleSpatialStatement ) );
free(sthand);
}
}
static int msOCISetDataHandlers(msOracleSpatialHandler *hand, msOracleSpatialDataHandler *dthand)
{
int success = 0;
OCIParam *paramp = NULL;
OCIRef *type_ref = NULL;
success = TRY( hand,
/* allocate dschp */
OCIHandleAlloc( hand->envhp, (dvoid **)&dthand->dschp, (ub4)OCI_HTYPE_DESCRIBE, (size_t)0, (dvoid **)0 ) )
&& TRY( hand,
/* describe SDO_GEOMETRY in svchp (dschp) */
OCIDescribeAny( hand->svchp, hand->errhp, (text *)SDO_GEOMETRY, (ub4)SDO_GEOMETRY_LEN, OCI_OTYPE_NAME, (ub1)1, (ub1)OCI_PTYPE_TYPE, dthand->dschp ) )
&& TRY( hand,
/* get param for SDO_GEOMETRY */
OCIAttrGet( (dvoid *)dthand->dschp, (ub4)OCI_HTYPE_DESCRIBE, (dvoid *)¶mp, (ub4 *)0, (ub4)OCI_ATTR_PARAM, hand->errhp ) )
&& TRY( hand,
/* get type_ref for SDO_GEOMETRY */
OCIAttrGet( (dvoid *)paramp, (ub4)OCI_DTYPE_PARAM, (dvoid *)&type_ref, (ub4 *)0, (ub4)OCI_ATTR_REF_TDO, hand->errhp ) )
&& TRY( hand,
/* get TDO for SDO_GEOMETRY */
OCIObjectPin( hand->envhp, hand->errhp, type_ref, (OCIComplexObject *)0, OCI_PIN_ANY, OCI_DURATION_SESSION, OCI_LOCK_NONE, (dvoid **)&dthand->tdo ) );
return success;
}
/* connect to database */
static msOracleSpatialHandler *msOCISetHandlers( char *username, char *password, char *dblink )
{
int success;
msOracleSpatialHandler *hand = NULL;
hand = (msOracleSpatialHandler *) malloc( sizeof(msOracleSpatialHandler));
if (hand == NULL) {
msSetError(MS_MEMERR, NULL, "msOCISetHandlers()");
return NULL;
}
memset( hand, 0, sizeof(msOracleSpatialHandler) );
hand->ref_count = 1;
hand->last_oci_status = MS_SUCCESS;
hand->last_oci_error[0] = (text)'\0';
success = TRY( hand,
/* allocate envhp */
#ifdef USE_THREAD
OCIEnvCreate( &hand->envhp, OCI_OBJECT|OCI_THREADED, (dvoid *)0, 0, 0, 0, (size_t) 0, (dvoid **)0 ) )
#else
OCIEnvCreate( &hand->envhp, OCI_OBJECT, (dvoid *)0, 0, 0, 0, (size_t) 0, (dvoid **)0 ) )
#endif
&& TRY( hand,
/* allocate errhp */
OCIHandleAlloc( (dvoid *)hand->envhp, (dvoid **)&hand->errhp, (ub4)OCI_HTYPE_ERROR, (size_t)0, (dvoid **)0 ) )
&& TRY( hand,
/* logon */
OCILogon( hand->envhp, hand->errhp, &hand->svchp, (text *)username, strlen(username), (text *)password, strlen(password), (text *)dblink, strlen(dblink) ) );
if ( !success ) {
msDebug( "Cannot create OCI Handlers. "
"Connection failure."
"Error: %s."
"msOracleSpatialLayerOpen()\n", hand->last_oci_error);
msSetError( MS_ORACLESPATIALERR,
"Cannot create OCI Handlers. "
"Connection failure. Check your logs and the connection string. ",
"msOracleSpatialLayerOpen()");
msOCICloseHandlers(hand);
return NULL;
}
return hand;
}
/* disconnect from database */
static void msOCICloseHandlers( msOracleSpatialHandler *hand )
{
if (hand->svchp != NULL)
OCILogoff( hand->svchp, hand->errhp );
if (hand->errhp != NULL)
OCIHandleFree( (dvoid *)hand->errhp, (ub4)OCI_HTYPE_ERROR );
if (hand->envhp != NULL)
OCIHandleFree( (dvoid *)hand->envhp, (ub4)OCI_HTYPE_ENV );
if (hand != NULL)
memset( hand, 0, sizeof (msOracleSpatialHandler));
free(hand);
}
static void msOCICloseDataHandlers( msOracleSpatialDataHandler *dthand )
{
if (dthand->dschp != NULL)
OCIHandleFree( (dvoid *)dthand->dschp, (ub4)OCI_HTYPE_DESCRIBE );
if (dthand != NULL)
memset( dthand, 0, sizeof (msOracleSpatialDataHandler));
free(dthand);
}
static void msOCIClearLayerInfo( msOracleSpatialLayerInfo *layerinfo )
{
if (layerinfo != NULL) {
memset( layerinfo, 0, sizeof( msOracleSpatialLayerInfo ) );
free(layerinfo);
}
}
/*function that creates the correct sql for geoditical srid for version 9i*/
static void osGeodeticData(int function, int version, char *query_str, size_t size, char *geom_column_name, char *index_column_name, char *srid, rectObj rect)
{
char *filter_field=index_column_name[0]=='\0' ? geom_column_name : index_column_name;
switch (function) {
case FUNCTION_FILTER: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_FILTER( %s, SDO_CS.VIEWPORT_TRANSFORM(MDSYS.SDO_GEOMETRY("
"2003, 0, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates ), :srid),"
"'querytype=window') = 'TRUE'",
filter_field);
break;
}
case FUNCTION_RELATE: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_RELATE( %s, SDO_CS.VIEWPORT_TRANSFORM(MDSYS.SDO_GEOMETRY("
"2003, 0, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates ), :srid),"
"'mask=anyinteract querytype=window') = 'TRUE'",
filter_field);
break;
}
case FUNCTION_GEOMRELATE: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_GEOM.RELATE( %s, 'anyinteract', SDO_CS.VIEWPORT_TRANSFORM(MDSYS.SDO_GEOMETRY("
"2003, 0, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates), :srid),"
"%f) = 'TRUE' AND %s IS NOT NULL",
index_column_name, TOLERANCE, geom_column_name );
break;
}
case FUNCTION_NONE: {
break;
}
default: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_FILTER( %s, SDO_CS.VIEWPORT_TRANSFORM(MDSYS.SDO_GEOMETRY("
"2003, 0, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates), :srid),"
"'querytype=window') = 'TRUE'",
filter_field );
}
}
}
/*function that generate the correct sql for no geoditic srid's*/
static void osNoGeodeticData(int function, int version, char *query_str, size_t size, char *geom_column_name, char *index_column_name, char *srid, rectObj rect)
{
char *filter_field= index_column_name[0]=='\0' ? geom_column_name : index_column_name;
switch (function) {
case FUNCTION_FILTER: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_FILTER( %s, MDSYS.SDO_GEOMETRY("
"2003, :srid, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
/* "MDSYS.SDO_ORDINATE_ARRAY(%.9g,%.9g,%.9g,%.9g)" */
":ordinates"
" ),'querytype=window') = 'TRUE'",
filter_field);
break;
}
case FUNCTION_RELATE: {
if (version == VERSION_10g) {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_ANYINTERACT( %s, MDSYS.SDO_GEOMETRY("
"2003, :srid, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates)) = 'TRUE'",
filter_field);
} else {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_RELATE( %s, MDSYS.SDO_GEOMETRY("
"2003, :srid, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates),"
"'mask=anyinteract querytype=window') = 'TRUE'",
geom_column_name);
}
break;
}
case FUNCTION_GEOMRELATE: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_GEOM.RELATE( %s, 'anyinteract', MDSYS.SDO_GEOMETRY("
"2003, :srid, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates),"
"%f) = 'TRUE' AND %s IS NOT NULL",
index_column_name, TOLERANCE, geom_column_name );
break;
}
case FUNCTION_NONE: {
break;
}
default: {
snprintf( query_str + strlen(query_str), size-strlen(query_str),
"SDO_FILTER( %s, MDSYS.SDO_GEOMETRY("
"2003, :srid, NULL,"
"MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),"
":ordinates),"
"'querytype=window') = 'TRUE'",
filter_field);
}
}
}
/* get ordinates from SDO buffer */
static int msOCIGet2DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt )
{
double x, y;
int i, n, success = 1;
boolean exists;
OCINumber *oci_number;
for( i=s, n=0; i < e && success; i+=2, n++ ) {
success = TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&x ) )
&& TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i+1, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&y ) );
if (success) {
pt[n].x = x;
pt[n].y = y;
}
}
return success ? n : 0;
}
static int msOCIGet3DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt )
{
double x, y;
int i, n, success = 1;
boolean exists;
#ifdef USE_POINT_Z_M
double z;
boolean numnull;
#endif /* USE_POINT_Z_M */
OCINumber *oci_number;
for( i=s, n=0; i < e && success; i+=3, n++ ) {
success = TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&x ) )
&& TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i+1, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&y ) )
#ifdef USE_POINT_Z_M
&& TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i+2, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
#endif /* USE_POINT_Z_M */
;
#ifdef USE_POINT_Z_M
if (success) {
success = TRY(hand, OCINumberIsZero( hand->errhp, oci_number, (boolean *)&numnull));
if (success) {
success = TRY( hand, OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&z ) );
} else {
hand->last_oci_status = MS_SUCCESS;
strlcpy( (char *)hand->last_oci_error, "Retrieve z value, but NULL value for z. Setting z to 0.", sizeof(hand->last_oci_error));
z = 0;
success = 1;
}
}
#endif /* USE_POINT_Z_M */
if (success) {
pt[n].x = x;
pt[n].y = y;
#ifdef USE_POINT_Z_M
pt[n].z = z;
#endif /* USE_POINT_Z_M */
}
}
return success ? n : 0;
}
static int msOCIGet4DOrdinates( msOracleSpatialHandler *hand, SDOGeometryObj *obj, int s, int e, pointObj *pt )
{
double x, y;
int i, n, success = 1;
boolean exists;
#ifdef USE_POINT_Z_M
double z;
boolean numnull;
#endif /* USE_POINT_Z_M */
OCINumber *oci_number;
for( i=s, n=0; i < e && success; i+=4, n++ ) {
success = TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&x ) )
&& TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i+1, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
&& TRY( hand,
OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&y ) )
#ifdef USE_POINT_Z_M
&& TRY( hand,
OCICollGetElem( hand->envhp, hand->errhp, (OCIColl *)obj->ordinates, (sb4)i+2, (boolean *)&exists, (dvoid *)&oci_number, (dvoid **)0 ) )
#endif /* USE_POINT_Z_M */
;
#ifdef USE_POINT_Z_M
if (success) {
success = TRY(hand, OCINumberIsZero( hand->errhp, oci_number, (boolean *)&numnull));
if (success) {
success = TRY( hand, OCINumberToReal( hand->errhp, oci_number, (uword)sizeof(double), (dvoid *)&z ) );
} else {
hand->last_oci_status = MS_SUCCESS;
strlcpy( (char *)hand->last_oci_error, "Retrieve z value, but NULL value for z. Setting z to 0.", sizeof(hand->last_oci_error));
z = 0;
success = 1;
}
}
#endif /* USE_POINT_Z_M */
if (success) {
pt[n].x = x;
pt[n].y = y;
#ifdef USE_POINT_Z_M
pt[n].z = z;
#endif /* USE_POINT_Z_M */
}
}
return success ? n : 0;
}
/* convert three-point circle to two-point rectangular bounds */
static int msOCIConvertCircle( pointObj *pt )
{
pointObj ptaux;
double dXa, dXb;
double ma, mb;
double cx, cy, r;
int success;
dXa = pt[1].x - pt[0].x;
success = (fabs( dXa ) > 1e-8);
if (!success) {
/* switch points 1 & 2 */
ptaux = pt[1];
pt[1] = pt[2];
pt[2] = ptaux;
dXa = pt[1].x - pt[0].x;
success = (fabs( dXa ) > 1e-8);
}
if (success) {
dXb = pt[2].x - pt[1].x;
success = (fabs( dXb ) > 1e-8);
if (!success) {
/* insert point 2 before point 0 */
ptaux = pt[2];
pt[2] = pt[1];
pt[1] = pt[0];
pt[0] = ptaux;
dXb = dXa; /* segment A has become B */
dXa = pt[1].x - pt[0].x; /* recalculate new segment A */
success = (fabs( dXa ) > 1e-8);
}
}
if (success) {
ma = (pt[1].y - pt[0].y)/dXa;
mb = (pt[2].y - pt[1].y)/dXb;
success = (fabs( mb - ma ) > 1e-8);
}
if (!success)
return 0;
/* calculate center and radius */
cx = (ma*mb*(pt[0].y - pt[2].y) + mb*(pt[0].x + pt[1].x) - ma*(pt[1].x + pt[2].x))/(2*(mb - ma));
cy = (fabs( ma ) > 1e-8)
? ((pt[0].y + pt[1].y)/2 - (cx - (pt[0].x + pt[1].x)/2)/ma)
: ((pt[1].y + pt[2].y)/2 - (cx - (pt[1].x + pt[2].x)/2)/mb);