dongjoon-hyun commented on a change in pull request #874:
URL: https://github.com/apache/orc/pull/874#discussion_r692265967
##########
File path: java/tools/src/java/org/apache/orc/tools/json/JsonSchemaFinder.java
##########
@@ -247,15 +249,41 @@ public void addFile(String filename) throws IOException {
} else {
reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
}
- addFile(reader);
+ addFile(reader, filename);
}
- public void addFile(java.io.Reader reader) throws IOException {
+ public void addFile(java.io.Reader reader, String filename) {
JsonStreamParser parser = new JsonStreamParser(reader);
- while (parser.hasNext()) {
- records += 1;
- mergedType = mergeType(mergedType, pickType(parser.next()));
+ try {
+ while (parser.hasNext()) {
+ mergedType = mergeType(mergedType, pickType(parser.next()));
+ records += 1;
+ }
+ } catch (JsonParseException e) {
+ printParseExceptionMsg(e, filename);
+ }
+ }
+
+ private void printParseExceptionMsg(JsonParseException e, String filename) {
+ System.err.printf(
+ "A JsonParseException was thrown while processing the %dth record of
file %s.%n",
+ records + 1, filename);
+
+ String pattern = "at line (\\d+) column (\\d+)";
+ Pattern r = Pattern.compile(pattern);
+ Matcher m = r.matcher(e.getMessage());
+ int line;
+ int column;
+ if (m.find( )) {
+ line = Integer.parseInt(m.group(1));
+ column = Integer.parseInt(m.group(2));
+ if (line == 1 && column == 1) {
+ System.err.printf("File %s is empty.", filename);
Review comment:
Please add a new line at the end.
```
- System.err.printf("File %s is empty.", filename);
+ System.err.printf("File %s is empty.\n", filename);
```
Otherwise, it looks like the following.
```
$ java -jar tools/target/orc-tools-1.8.0-SNAPSHOT-uber.jar json-schema
~/empty.json
Reading file /Users/dongjoon/empty.json
A JsonParseException was thrown while processing the 1th record of file
/Users/dongjoon/empty.json.
File /Users/dongjoon/empty.json is empty.%
```
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