1 files changed, 62 insertions, 0 deletions
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/text/compliant/v3/FieldVarCharOutput.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/text/compliant/v3/FieldVarCharOutput.java
new file mode 100644
index 000000000..df48a5548
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/text/compliant/v3/FieldVarCharOutput.java
@@ -0,0 +1,62 @@
+/*
+ * 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.drill.exec.store.easy.text.compliant.v3;
+
+import org.apache.drill.exec.physical.rowSet.RowSetLoader;
+import org.apache.drill.exec.record.metadata.TupleMetadata;
+
+/**
+ * Class is responsible for generating record batches for text file inputs. We generate
+ * a record batch with a set of varchar vectors. A varchar vector contains all the field
+ * values for a given column. Each record is a single value within each vector of the set.
+ */
+class FieldVarCharOutput extends BaseFieldOutput {
+
+  /**
+   * We initialize and add the varchar vector for each incoming field in this
+   * constructor.
+   * @param outputMutator  Used to create/modify schema
+   * @param fieldNames Incoming field names
+   * @param columns  List of columns selected in the query
+   * @param isStarQuery  boolean to indicate if all fields are selected or not
+   */
+  public FieldVarCharOutput(RowSetLoader writer) {
+    super(writer,
+        TextReader.MAXIMUM_NUMBER_COLUMNS,
+        makeMask(writer));
+  }
+
+  private static boolean[] makeMask(RowSetLoader writer) {
+    final TupleMetadata schema = writer.tupleSchema();
+    final boolean projectionMask[] = new boolean[schema.size()];
+    for (int i = 0; i < schema.size(); i++) {
+      projectionMask[i] = schema.metadata(i).isProjected();
+    }
+    return projectionMask;
+  }
+
+  @Override
+  public boolean endField() {
+    if (fieldProjected) {
+      writer.scalar(currentFieldIndex)
+        .setBytes(fieldBytes, currentDataPointer);
+    }
+
+    return super.endField();
+  }
+}