Prepare release

README.md

@@ -15,27 +15,9 @@
 [![Duplicated Lines (%)](https://sonarcloud.io/api/project_badges/measure?project=com.exasol%3Aparquet-io-java&metric=duplicated_lines_density)](https://sonarcloud.io/dashboard?id=com.exasol%3Aparquet-io-java)
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-This project provides a library that reads [Parquet](https://parquet.apache.org/) files into Java objects.
-
-## Installation
-
-Add this library as a dependency to your project's `pom.xml` file.
-
-```xml
-<dependencies>
-    <dependency>
-        <groupId>com.exasol</groupId>
-        <artifactId>parquet-io-java</artifactId>
-        <version>LATEST VERSION</version>
-    </dependency>
-</dependencies>
-```
-
-Please use the latest version of the library.
+## In a nutshell
 
-## Usage
-
-Here is a small example code showing the usage of the library.
+This project provides a library that reads [Parquet](https://parquet.apache.org/) files into Java objects.
 
 ```java
 final Path path = new Path("/data/parquet/part-0000.parquet");
@@ -44,85 +26,13 @@ try (final ParquetReader<Row> reader = RowParquetReader
         .builder(HadoopInputFile.fromPath(path, conf)).build()) {
     Row row = reader.read();
     while (row != null) {
-        List<Object> values = row.getValues();
-        System.out.println(values);
+        System.out.println(row.getValues());
         row = reader.read();
     }
-} catch (final IOException exception) {
-    //
-}
-```
-
-## Data Type Mapping
-
-The following table shows how each Parquet data type is mapped into Java data
-types.
-
-| Parquet Data Type    | Parquet Logical Type | Java Data Type |
-|:---------------------|:---------------------|:---------------|
-| boolean              |                      | Boolean        |
-| int32                |                      | Integer        |
-| int32                | date                 | Date           |
-| int32                | decimal(p, s)        | BigDecimal     |
-| int64                |                      | Long           |
-| int64                | timestamp_millis     | Timestamp      |
-| int64                | timestamp_micros     | Timestamp      |
-| int64                | decimal(p, s)        | BigDecimal     |
-| float                |                      | Float          |
-| double               |                      | Double         |
-| binary               |                      | String         |
-| binary               | utf8                 | String         |
-| binary               | decimal(p, s)        | BigDecimal     |
-| fixed_len_byte_array |                      | String         |
-| fixed_len_byte_array | decimal(p, s)        | BigDecimal     |
-| fixed_len_byte_array | uuid                 | UUID           |
-| int96                |                      | Timestamp      |
-| group                |                      | Map            |
-| group                | LIST                 | List           |
-| group                | MAP                  | Map            |
-| group                | REPEATED             | List           |
-
-### Parquet Repeated Types
-
-Parquet data type can repeat a single field or the group of fields. The
-parquet-io-java (PIOJ) reads these data types into Java `List` type.
-
-For example, given the following Parquet schemas:
-
-```
-message parquet_schema {
-  repeated binary name (UTF8);
-}
-```
-
-```
-message parquet_schema {
-  repeated group person {
-    required binary name (UTF8);
-  }
-}
-```
-
-The PIOJ reads both of these Parquet types into Java list of `["John", "Jane"]`.
-
-On the other hand, you can import a repeated group with multiple fields as a
-list of maps.
-
-```
-message parquet_schema {
-  repeated group person {
-    required binary name (UTF8);
-    optional int32 age;
-  }
 }
 ```
 
-The PIOJ reads it into a list of person maps:
-
-```
-[ Map("name" -> "John", "age" -> 24), Map("name" -> "Jane", "age" -> 22) ]
-```
-
+For installation, usage examples, data type mapping, and the API reference, see the [User Guide](doc/user_guide.md).
 ## Information for Users
 
 - [User Guide](doc/user_guide.md)

doc/changes/changes_2.0.16.md

@@ -1,4 +1,4 @@
-# Parquet for Java 2.0.16, released 2026-05-??
+# Parquet for Java 2.0.16, released 2026-05-12
 
 Code name: Migrate Scala to Java
 

doc/user_guide.md

@@ -65,3 +65,70 @@ try (final RowParquetChunkReader reader = RowParquetChunkReader
     }
 }
 ```
+
+## Data Type Mapping
+
+The following table shows how each Parquet data type is mapped into Java data types.
+
+| Parquet Data Type    | Parquet Logical Type | Java Data Type |
+|:---------------------|:---------------------|:---------------|
+| boolean              |                      | Boolean        |
+| int32                |                      | Integer        |
+| int32                | date                 | Date           |
+| int32                | decimal(p, s)        | BigDecimal     |
+| int64                |                      | Long           |
+| int64                | timestamp_millis     | Timestamp      |
+| int64                | timestamp_micros     | Timestamp      |
+| int64                | decimal(p, s)        | BigDecimal     |
+| float                |                      | Float          |
+| double               |                      | Double         |
+| binary               |                      | String         |
+| binary               | utf8                 | String         |
+| binary               | decimal(p, s)        | BigDecimal     |
+| fixed_len_byte_array |                      | String         |
+| fixed_len_byte_array | decimal(p, s)        | BigDecimal     |
+| fixed_len_byte_array | uuid                 | UUID           |
+| int96                |                      | Timestamp      |
+| group                |                      | Map            |
+| group                | LIST                 | List           |
+| group                | MAP                  | Map            |
+| group                | REPEATED             | List           |
+
+## Parquet Repeated Types
+
+Parquet data types can repeat a single field or a group of fields. Parquet IO Java reads these repeated types into Java `List` types.
+
+For example, given the following Parquet schemas:
+
+```
+message parquet_schema {
+  repeated binary name (UTF8);
+}
+```
+
+```
+message parquet_schema {
+  repeated group person {
+    required binary name (UTF8);
+  }
+}
+```
+
+Parquet IO Java reads both of these Parquet types into a Java list such as `["John", "Jane"]`.
+
+On the other hand, you can import a repeated group with multiple fields as a list of maps.
+
+```
+message parquet_schema {
+  repeated group person {
+    required binary name (UTF8);
+    optional int32 age;
+  }
+}
+```
+
+Parquet IO Java reads it into a list of person maps:
+
+```
+[ Map("name" -> "John", "age" -> 24), Map("name" -> "Jane", "age" -> 22) ]
+```