[oracle] Compile some expression functions

nyalldawson · nyalldawson · commit 62aefd7a8323 · 2018-04-17T18:46:31.000+10:00
Greatly speeds up case-insensitive value matches for oracle expression based feature requests (cherry-picked from 63e450a)
diff --git a/src/providers/oracle/qgsoracleexpressioncompiler.cpp b/src/providers/oracle/qgsoracleexpressioncompiler.cpp
@@ -108,3 +108,28 @@ QString QgsOracleExpressionCompiler::quotedValue( const QVariant &value, bool &o
       return QgsOracleConn::quotedValue( value );
   }
 }
+
+static const QMap<QString, QString> FUNCTION_NAMES_SQL_FUNCTIONS_MAP
+{
+  { "sqrt", "sqrt" },
+  { "abs", "abs" },
+  { "cos", "cos" },
+  { "sin", "sin" },
+  { "tan", "tan" },
+  { "acos", "acos" },
+  { "asin", "asin" },
+  { "atan", "atan" },
+  { "exp", "exp" },
+  { "ln", "ln" },
+  { "log", "log" },
+  { "round", "round" },
+  { "floor", "floor" },
+  { "ceil", "ceil" },
+  { "lower", "lower" },
+  { "upper", "upper" },
+};
+
+QString QgsOracleExpressionCompiler::sqlFunctionFromFunctionName( const QString &fnName ) const
+{
+  return FUNCTION_NAMES_SQL_FUNCTIONS_MAP.value( fnName, QString() );
+}
diff --git a/src/providers/oracle/qgsoracleexpressioncompiler.h b/src/providers/oracle/qgsoracleexpressioncompiler.h
@@ -30,6 +30,7 @@ class QgsOracleExpressionCompiler : public QgsSqlExpressionCompiler
     virtual Result compileNode( const QgsExpressionNode *node, QString &result ) override;
     virtual QString quotedIdentifier( const QString &identifier ) override;
     virtual QString quotedValue( const QVariant &value, bool &ok ) override;
+    QString sqlFunctionFromFunctionName( const QString &fnName ) const override;
 };
 
 #endif // QGSORACLEEXPRESSIONCOMPILER_H
diff --git a/tests/src/python/test_provider_oracle.py b/tests/src/python/test_provider_oracle.py
@@ -74,34 +74,14 @@ def uncompiledFilters(self):
             'NULL or true',
             'NULL or NULL',
             'not null',
-            'sqrt(pk) >= 2',
             'radians(cnt) < 2',
             'degrees(pk) <= 200',
-            'abs(cnt) <= 200',
-            'cos(pk) < 0',
-            'sin(pk) < 0',
-            'tan(pk) < 0',
-            'acos(-1) < pk',
-            'asin(1) < pk',
-            'atan(3.14) < pk',
             'atan2(3.14, pk) < 1',
-            'exp(pk) < 10',
-            'ln(pk) <= 1',
-            'log(3, pk) <= 1',
-            'log10(pk) < 0.5',
-            'round(3.14) <= pk',
-            'round(0.314,1) * 10 = pk',
-            'floor(3.14) <= pk',
-            'ceil(3.14) <= pk',
             'pk < pi()',
-            'round(cnt / 66.67) <= 2',
-            'floor(cnt / 66.67) <= 2',
-            'ceil(cnt / 66.67) <= 2',
+            'log10(pk) < 0.5',
             'pk < pi() / 2',
             'pk = char(51)',
             'pk = coalesce(NULL,3,4)',
-            'lower(name) = \'apple\'',
-            'upper(name) = \'APPLE\'',
             'name = trim(\'   Apple   \')',
             'x($geometry) < -70',
             'y($geometry) > 70',
