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new a3a62b866e0 Add scaffold CsvIOParseHelpers (#31720)
a3a62b866e0 is described below
commit a3a62b866e0c1ac75c662b3f633d775cac64ffdb
Author: Francis O'Hara <[email protected]>
AuthorDate: Mon Jul 1 09:28:11 2024 -0700
Add scaffold CsvIOParseHelpers (#31720)
---
.../apache/beam/sdk/io/csv/CsvIOParseHelpers.java | 55 ++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git
a/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java
b/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java
new file mode 100644
index 00000000000..042e284cd52
--- /dev/null
+++
b/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java
@@ -0,0 +1,55 @@
+/*
+ * 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.beam.sdk.io.csv;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.commons.csv.CSVFormat;
+
+/** A utility class containing shared methods for parsing CSV records. */
+final class CsvIOParseHelpers {
+ /** Validate the {@link CSVFormat} for CSV record parsing requirements. */
+ // TODO(https://github.com/apache/beam/issues/31712): implement method.
+ static void validate(CSVFormat format) {}
+
+ /**
+ * Validate the {@link CSVFormat} in relation to the {@link Schema} for CSV
record parsing
+ * requirements.
+ */
+ // TODO(https://github.com/apache/beam/issues/31716): implement method.
+ static void validate(CSVFormat format, Schema schema) {}
+
+ /**
+ * Build a {@link List} of {@link Schema.Field}s corresponding to the
expected position of each
+ * field within the CSV record.
+ */
+ // TODO(https://github.com/apache/beam/issues/31718): implement method.
+ static List<Schema.Field> mapFieldPositions(CSVFormat format, Schema schema)
{
+ return new ArrayList<>();
+ }
+
+ /**
+ * Parse the given {@link String} cell of the CSV record based on the given
field's {@link
+ * Schema.FieldType}.
+ */
+ // TODO(https://github.com/apache/beam/issues/31719): implement method.
+ static Object parseCell(String cell, Schema.Field field) {
+ return "";
+ }
+}
