Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2570#discussion_r176439422
--- Diff:
nifi-commons/nifi-record-path/src/main/java/org/apache/nifi/record/path/functions/ToBytes.java
---
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.record.path.functions;
+
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPathEvaluationContext;
+import org.apache.nifi.record.path.StandardFieldValue;
+import org.apache.nifi.record.path.paths.RecordPathSegment;
+import org.apache.nifi.record.path.util.RecordPathUtils;
+import org.apache.nifi.serialization.record.RecordFieldType;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.nio.charset.Charset;
+import java.util.stream.Stream;
+
+public class ToBytes extends RecordPathSegment {
+
+ private final RecordPathSegment recordPath;
+ private final RecordPathSegment charsetSegment;
+
+ public ToBytes(final RecordPathSegment recordPath, final
RecordPathSegment charsetSegment, final boolean absolute) {
+ super("toBytes", null, absolute);
+ this.recordPath = recordPath;
+ this.charsetSegment = charsetSegment;
+ }
+
+ @Override
+ public Stream<FieldValue> evaluate(RecordPathEvaluationContext
context) {
+ final Stream<FieldValue> fieldValues =
recordPath.evaluate(context);
+ return fieldValues.filter(fv -> fv.getValue() != null)
+ .map(fv -> {
+
+ if (!(fv.getValue() instanceof String)) {
+ return fv;
+ }
+
+ final Charset charset =
getCharset(this.charsetSegment, context);
+
+ final byte[] bytesValue;
+ try {
+ Byte[] src = (Byte[])
DataTypeUtils.toArray(fv.getValue(), fv.getField().getFieldName(),
RecordFieldType.BYTE.getDataType(), charset);
+ bytesValue = new byte[src.length];
+ for(int i=0;i<src.length;i++) {
+ bytesValue[i] = src[i];
+ }
+ } catch (final Exception e) {
+ return fv;
--- End diff --
Should probably let the Exception fly - as-is, it is just silently
swallowing the Exception and then returning an object of the wrong type.
---
