Merge pull request #444 from alessiomatricardi/dev

fix: unescape backslashes before sending to the database

Author: torshid

core/src/main/java/com/turkraft/springfilter/parser/AntlrParser.java

@@ -57,7 +57,7 @@ public FilterNode parse(AntlrBaseContext antlrCtx, @Nullable ParseContext ctx) {
       String text = antlrCtx.getText().startsWith("'") && antlrCtx.getText().endsWith("'")
           ? antlrCtx.getText().substring(1, antlrCtx.getText().length() - 1)
           : antlrCtx.getText();
-      return map(ctx, new InputNode(text.replace("\\'", "'")));
+      return map(ctx, new InputNode(unescapeString(text)));
     }
 
     if (antlrCtx instanceof FieldContext) {
@@ -151,4 +151,8 @@ private FilterNode map(@Nullable ParseContext ctx, FilterNode input) {
     return Objects.requireNonNullElse(ctx.getNodeMapper().apply(input), input);
   }
 
+  private String unescapeString(String input) {
+    return input.replace("\\'", "'").replace("\\\\", "\\");
+  }
+
 }