reuse streams for pretty-printing
diff --git a/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/prettyprint/VXQueryLogicalExpressionPrettyPrintVisitor.java b/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/prettyprint/VXQueryLogicalExpressionPrettyPrintVisitor.java
index 65ace85..ccdfb6b 100644
--- a/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/prettyprint/VXQueryLogicalExpressionPrettyPrintVisitor.java
+++ b/vxquery-core/src/main/java/org/apache/vxquery/compiler/algebricks/prettyprint/VXQueryLogicalExpressionPrettyPrintVisitor.java
@@ -49,12 +49,16 @@
IntegerPointable ip;
TaggedValuePointable tvp;
XMLSerializer serializer;
+ ByteArrayOutputStream os;
+ PrintStream ps;
public VXQueryLogicalExpressionPrettyPrintVisitor(StaticContext ctx) {
this.ctx = ctx;
this.ip = (IntegerPointable) IntegerPointable.FACTORY.createPointable();
this.tvp = (TaggedValuePointable) TaggedValuePointable.FACTORY.createPointable();
this.serializer = new XMLSerializer();
+ this.os = new ByteArrayOutputStream();
+ this.ps = new PrintStream(os);
}
@Override
@@ -63,17 +67,15 @@
if (value instanceof VXQueryConstantValue) {
VXQueryConstantValue vxqValue = (VXQueryConstantValue) value;
tvp.set(vxqValue.getValue(), 0, vxqValue.getValue().length);
-
- ByteArrayOutputStream os = new ByteArrayOutputStream();
- PrintStream ps = new PrintStream(os);
-
serializer.printTaggedValuePointable(ps, tvp);
-
try {
return vxqValue.getType() + ": " + os.toString("UTF8");
} catch (UnsupportedEncodingException e) {
// print stack trace and return the default
e.printStackTrace();
+ } finally {
+ ps.flush();
+ os.reset();
}
}
return value.toString();
