[IOTDB-4106] Add close method for FilterAndProjectOperator

antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/SqlLexer.g4

@@ -945,7 +945,7 @@ fragment DQUOTA_STRING
     ;
 
 fragment SQUOTA_STRING
-    : '\'' ( '\\'. | '\'\'' |~('\'') )* '\''
+    : '\'' ( '\\'. | '\'\'' | ~('\'') )* '\''
     ;
 
 fragment BQUOTA_STRING

server/src/main/java/org/apache/iotdb/db/mpp/execution/operator/process/FilterAndProjectOperator.java

@@ -207,6 +207,17 @@ public ListenableFuture<?> isBlocked() {
     return inputOperator.isBlocked();
   }
 
+  @Override
+  public void close() throws Exception {
+    for (ColumnTransformer columnTransformer : projectOutputTransformerList) {
+      columnTransformer.close();
+    }
+    if (filterOutputTransformer != null) {
+      filterOutputTransformer.close();
+    }
+    inputOperator.close();
+  }
+
   @Override
   public long calculateMaxPeekMemory() {
     long maxPeekMemory = inputOperator.calculateMaxReturnSize();

server/src/main/java/org/apache/iotdb/db/mpp/transformation/dag/column/ColumnTransformer.java

@@ -75,4 +75,8 @@ public boolean isReturnTypeNumeric() {
   protected abstract void evaluate();
 
   protected abstract void checkType();
+
+  public void close() {
+    // do nothing
+  }
 }

server/src/main/java/org/apache/iotdb/db/mpp/transformation/dag/column/multi/MappableUDFColumnTransformer.java

@@ -92,4 +92,10 @@ protected void checkType() {
   public ColumnTransformer[] getInputColumnTransformers() {
     return inputColumnTransformers;
   }
+
+  @Override
+  public void close() {
+    // finalize executor
+    executor.beforeDestroy();
+  }
 }

tsfile/src/main/java/org/apache/iotdb/tsfile/read/common/parser/PathVisitor.java

@@ -93,8 +93,4 @@ public static boolean isRealNumber(String str) {
     }
     return NumberUtils.isCreatable(str.substring(index));
   }
-
-  public static void main(String[] args) {
-    System.out.println(isRealNumber("+-1"));
-  }
 }