Enable LazyConnectionDataSourceProxy (#419)

* Update IntelliJ run configs

* Enable LazyConnectionDataSourceProxy

Author: mmwinther

.run/Data Integrity test _-_ prod.run.xml .run/data-integrity-test-prod.run.xml.run/Data Integrity test _-_ prod.run.xml renamed to .run/data-integrity-test-prod.run.xml

@@ -10,7 +10,8 @@
     <option name="PACKAGE_NAME" value="no.ssb.klass.api" />
     <option name="MAIN_CLASS_NAME" value="" />
     <option name="METHOD_NAME" value="" />
-    <option name="TEST_OBJECT" value="package" />
+    <option name="TEST_OBJECT" value="tags" />
+    <tag value="!data-integrity" />
     <method v="2">
       <option name="Make" enabled="true" />
     </method>

.run/Klass API tests.run.xml .run/klass-api-tests.run.xml.run/Klass API tests.run.xml renamed to .run/klass-api-tests.run.xml

@@ -0,0 +1,18 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Klass shared tests" type="JUnit" factoryName="JUnit">
+    <module name="klass-shared" />
+    <extension name="coverage">
+      <pattern>
+        <option name="PATTERN" value="no.ssb.klass.api.applicationtest.*" />
+        <option name="ENABLED" value="true" />
+      </pattern>
+    </extension>
+    <option name="PACKAGE_NAME" value="no.ssb.klass" />
+    <option name="MAIN_CLASS_NAME" value="" />
+    <option name="METHOD_NAME" value="" />
+    <option name="TEST_OBJECT" value="package" />
+    <method v="2">
+      <option name="Make" enabled="true" />
+    </method>
+  </configuration>
+</component>

.run/klass-shared-tests.run.xml

@@ -0,0 +1,28 @@
+package no.ssb.klass.api.config;
+
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+import org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy;
+
+import javax.sql.DataSource;
+
+/**
+ * Configuration class that sets up a lazy-loading data source proxy to improve performance by
+ * deferring physical database connections until they are actually needed. This optimization is
+ * particularly useful in scenarios where database operations don't always occur during request
+ * processing.
+ */
+@AutoConfiguration(
+        after = {DataSourceAutoConfiguration.class},
+        before = {HibernateJpaAutoConfiguration.class})
+class LazyConnectionDataSourceProxyConfig {
+
+    @Bean
+    @Primary
+    DataSource lazyConnectionDataSourceProxy(DataSource dataSource) {
+        return new LazyConnectionDataSourceProxy(dataSource);
+    }
+}