On 10/04/2011 11:25 AM, Yang wrote:
> let me try out the MinimalPrettyPrinter,
Here's a patch that works for me:
Index: lang/java/avro/src/main/java/org/apache/avro/io/JsonEncoder.java
===================================================================
--- lang/java/avro/src/main/java/org/apache/avro/io/JsonEncoder.java
(revision 1178534)
+++ lang/java/avro/src/main/java/org/apache/avro/io/JsonEncoder.java
(working copy)
@@ -31,6 +31,7 @@
import org.codehaus.jackson.JsonEncoding;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerator;
+import org.codehaus.jackson.util.MinimalPrettyPrinter;
/** An {@link Encoder} for Avro's JSON data encoding.
* </p>
@@ -67,11 +68,17 @@
}
}
+ // by default, one object per line
private static JsonGenerator getJsonGenerator(OutputStream out)
throws IOException {
if (null == out)
throw new NullPointerException("OutputStream cannot be null");
- return new JsonFactory().createJsonGenerator(out, JsonEncoding.UTF8);
+ JsonGenerator g
+ = new JsonFactory().createJsonGenerator(out, JsonEncoding.UTF8);
+ MinimalPrettyPrinter pp = new MinimalPrettyPrinter();
+ pp.setRootValueSeparator("\n");
+ g.setPrettyPrinter(pp);
+ return g;
}
/**
