add json file data deserializer for memory efficient json parsing

kop-common-lib/pom.xml

@@ -95,6 +95,14 @@
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-annotations</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-core</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-core</artifactId>

kop-common-lib/src/main/java/de/itvsh/kop/common/binaryfile/FileDataDeserializer.java

+package de.itvsh.kop.common.binaryfile;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JacksonException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+
+import lombok.SneakyThrows;
+
+public class FileDataDeserializer extends StdDeserializer<File> {
+
+	protected FileDataDeserializer() {
+		super(File.class);
+	}
+
+	@SneakyThrows
+	@Override
+	public File deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JacksonException {
+		var tempFile = TempFileUtils.createTmpFile();
+
+		try (var out = new FileOutputStream(tempFile.toFile())) {
+			p.readBinaryValue(out);
+			out.flush();
+		}
+
+		return tempFile.toFile();
+	}
+
+}