From 9b8d2312848b2016f0e495a0128d2c2e723cc6c7 Mon Sep 17 00:00:00 2001
From: Michael Hoennig <michael@hoennig.de>
Date: Tue, 2 Apr 2024 13:23:18 +0200
Subject: [PATCH] fixing issues from code-review

---
 build.gradle                                  |  1 -
 .../hsadminng/mapper/PostgresArray.java       | 58 -------------------
 2 files changed, 59 deletions(-)
 delete mode 100644 src/main/java/net/hostsharing/hsadminng/mapper/PostgresArray.java

diff --git a/build.gradle b/build.gradle
index a11d9493..88c59050 100644
--- a/build.gradle
+++ b/build.gradle
@@ -62,7 +62,6 @@ dependencies {
     implementation 'org.springdoc:springdoc-openapi:2.4.0'
     implementation 'org.postgresql:postgresql:42.7.3'
     implementation 'org.liquibase:liquibase-core:4.27.0'
-    //implementation 'com.vladmihalcea:hibernate-types-60:2.21.1'
     implementation 'io.hypersistence:hypersistence-utils-hibernate-63:3.7.3'
     implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.17.0'
     implementation 'org.openapitools:jackson-databind-nullable:0.2.6'
diff --git a/src/main/java/net/hostsharing/hsadminng/mapper/PostgresArray.java b/src/main/java/net/hostsharing/hsadminng/mapper/PostgresArray.java
deleted file mode 100644
index e1e1d056..00000000
--- a/src/main/java/net/hostsharing/hsadminng/mapper/PostgresArray.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package net.hostsharing.hsadminng.mapper;
-
-import lombok.experimental.UtilityClass;
-import org.postgresql.util.PGtokenizer;
-
-import java.lang.reflect.Array;
-import java.nio.charset.StandardCharsets;
-import java.util.function.Function;
-
-@UtilityClass
-public class PostgresArray {
-
-    /**
-     * Converts a byte[], as returned for a Postgres-array by native queries, to a Java array.
-     *
-     * <p>This example code worked with Hibernate 5 (Spring Boot 3.0.x):
-     * <pre><code>
-     *      return (UUID[]) em.createNativeQuery("select currentSubjectsUuids() as uuids", UUID[].class).getSingleResult();
-     * </code></pre>
-     * </p>
-     *
-     * <p>With Hibernate 6 (Spring Boot 3.1.x), this utility method can be used like such:
-     * <pre><code>
-     *      final byte[] result = (byte[]) em.createNativeQuery("select * from currentSubjectsUuids() as uuids", UUID[].class)
-     *                 .getSingleResult();
-     *      return fromPostgresArray(result, UUID.class, UUID::fromString);
-     * </code></pre>
-     * </p>
-     *
-     * @param pgArray the byte[] returned by a native query containing as rendered for a Postgres array
-     * @param elementClass the class of a single element of the Java array to be returned
-     * @param itemParser converts a string element to the specified elementClass
-     * @return a Java array containing the data from pgArray
-     * @param <T> type of a single element of the Java array
-     */
-    public static <T> T[] fromPostgresArray(final byte[] pgArray, final Class<T> elementClass, final Function<String, T> itemParser) {
-        final var pgArrayLiteral = new String(pgArray, StandardCharsets.UTF_8);
-        if (pgArrayLiteral.length() == 2) {
-            return newGenericArray(elementClass, 0);
-        }
-        final PGtokenizer tokenizer = new PGtokenizer(pgArrayLiteral.substring(1, pgArrayLiteral.length()-1), ',');
-        tokenizer.remove("\"", "\"");
-        final T[] array = newGenericArray(elementClass, tokenizer.getSize()); // Create a new array of the specified type and length
-        for ( int n = 0; n < tokenizer.getSize(); ++n ) {
-            final String token = tokenizer.getToken(n);
-            if ( !"NULL".equals(token) ) {
-                array[n] = itemParser.apply(token.trim().replace("\\\"", "\""));
-            }
-        }
-        return array;
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T[] newGenericArray(final Class<T> elementClass, final int length) {
-        return (T[]) Array.newInstance(elementClass, length);
-    }
-
-}