@Override public void endElement (String uri, String name, String qName) { String str = XMLUtils.unmangleXmlString(cbuf.toString(), false).trim(); cbuf = new StringBuffer(); switch (state) { case EXPECT_EDITS_TAG: throw new InvalidXmlException("expected "); case EXPECT_VERSION: if (!name.equals("EDITS_VERSION")) { throw new InvalidXmlException("expected "); } try { int version = Integer.parseInt(str); visitor.start(version); } catch (IOException e) { // Can't throw IOException from a SAX method, sigh. throw new RuntimeException(e); } state = ParseState.EXPECT_RECORD; break; case EXPECT_RECORD: if (name.equals("EDITS")) { state = ParseState.EXPECT_END; } else if (!name.equals("RECORD")) { throw new InvalidXmlException("expected or "); } break; case EXPECT_OPCODE: if (!name.equals("OPCODE")) { throw new InvalidXmlException("expected "); } opCode = FSEditLogOpCodes.valueOf(str); state = ParseState.EXPECT_DATA; break; case EXPECT_DATA: throw new InvalidXmlException("expected "); case HANDLE_DATA: stanza.setValue(str); if (stanzaStack.empty()) { if (!name.equals("DATA")) { throw new InvalidXmlException("expected "); } state = ParseState.EXPECT_RECORD; FSEditLogOp op = opCache.get(opCode); opCode = null; try { op.decodeXml(stanza); stanza = null; } finally { if (stanza != null) { System.err.println("fromXml error decoding opcode " + opCode + "\n" + stanza.toString()); stanza = null; } } if (fixTxIds) { if (nextTxId <= 0) { nextTxId = op.getTransactionId(); if (nextTxId <= 0) { nextTxId = 1; } } op.setTransactionId(nextTxId); nextTxId++; } try { visitor.visitOp(op); } catch (IOException e) { // Can't throw IOException from a SAX method, sigh. throw new RuntimeException(e); } state = ParseState.EXPECT_RECORD; } else { stanza = stanzaStack.pop(); } break; case EXPECT_END: throw new InvalidXmlException("not expecting anything after "); } }

How to use decodeXmlmethodin org.apache.hadoop.hdfs.server.namenode.FSEditLogOp

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How to use
decodeXml
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org.apache.hadoop.hdfs.server.namenode.FSEditLogOp