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1c439e20df
The case of the characters should be ignored when comparing dimension names in pcpatch_schema_same_dimensions. This is to match the behavior of pc_schema_get_dimension_by_name which ignores the case.
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/***********************************************************************
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* pc_editor.c
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*
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* Editor functions for points and patches in PgSQL.
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*
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* Copyright (c) 2017 Oslandia
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*
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***********************************************************************/
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#include "pc_pgsql.h" /* Common PgSQL support for our type */
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Datum pcpatch_setpcid(PG_FUNCTION_ARGS);
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static bool
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pcpatch_schema_same_dimensions(const PCSCHEMA *s1, const PCSCHEMA *s2)
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{
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size_t i;
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if ( s1->ndims != s2->ndims )
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return false;
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for ( i = 0; i < s1->ndims; i++ )
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{
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PCDIMENSION *s1dim = s1->dims[i];
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PCDIMENSION *s2dim = s2->dims[i];
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if ( strcasecmp(s1dim->name, s2dim->name) != 0 )
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return false;
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if ( s1dim->interpretation != s2dim->interpretation )
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return false;
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}
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return true;
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}
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PG_FUNCTION_INFO_V1(pcpatch_setpcid);
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Datum pcpatch_setpcid(PG_FUNCTION_ARGS)
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{
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PCPATCH *paout = NULL;
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SERIALIZED_PATCH *serpatch;
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SERIALIZED_PATCH *serpa = PG_GETARG_SERPATCH_P(0);
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int32 pcid = PG_GETARG_INT32(1);
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float8 def = PG_GETARG_FLOAT8(2);
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PCSCHEMA *old_schema = pc_schema_from_pcid(serpa->pcid, fcinfo);
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PCSCHEMA *new_schema = pc_schema_from_pcid(pcid, fcinfo);
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if ( pcpatch_schema_same_dimensions(old_schema, new_schema) )
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{
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// old_schema and new_schema have the same dimensions at the same
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// positions, so we can take a fast path avoid the point-by-point,
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// dimension-by-dimension copying
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if ( old_schema->compression == new_schema->compression )
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{
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// no need to deserialize the patch
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serpatch = palloc(serpa->size);
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if ( ! serpatch )
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PG_RETURN_NULL();
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memcpy(serpatch, serpa, serpa->size);
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serpatch->pcid = pcid;
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PG_RETURN_POINTER(serpatch);
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}
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else
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{
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paout = pc_patch_deserialize(serpa, old_schema);
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if ( ! paout )
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PG_RETURN_NULL();
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paout->schema = new_schema;
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}
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} else {
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PCPATCH *patch;
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patch = pc_patch_deserialize(serpa, old_schema);
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if ( ! patch )
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PG_RETURN_NULL();
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paout = pc_patch_set_schema(patch, new_schema, def);
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if ( patch != paout )
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pc_patch_free(patch);
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if ( ! paout )
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PG_RETURN_NULL();
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}
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serpatch = pc_patch_serialize(paout, NULL);
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pc_patch_free(paout);
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PG_RETURN_POINTER(serpatch);
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}
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