join to be part of post to avoid challenges of request params and add…

…ress security.

src/main/java/com/homihq/db2rest/rest/read/v2/ReadControllerV2.java

@@ -17,13 +17,15 @@ public class ReadControllerV2 {
 
     private final ReadServiceV2 readServiceV2;
 
+
     @GetMapping(value = "/V2/{tableName}" , produces = "application/json")
     public Object find(@PathVariable String tableName,
                                   @RequestParam(name = "fields", required = false, defaultValue = "*") String fields,
                                   @RequestParam(name = "filter", required = false, defaultValue = "") String filter,
                                   @RequestParam(name = "sort", required = false, defaultValue = "") List<String> sorts,
                        @RequestParam(name = "limit", required = false, defaultValue = "-1") int limit,
-                       @RequestParam(name = "offset", required = false, defaultValue = "-1") long offset) {
+                       @RequestParam(name = "offset", required = false, defaultValue = "-1") long offset
+                        ) {
 
         log.info("fields - {}", fields);
         log.info("filter - {}", filter);
@@ -37,7 +39,8 @@ public Object find(@PathVariable String tableName,
                 .filter(filter)
                 .sorts(sorts)
                 .limit(limit)
-                .offset(offset).build();
+                .offset(offset)
+                .build();
 
 
         return readServiceV2.find(readContextV2);

src/main/java/com/homihq/db2rest/rest/read/v2/dto/JoinDetail.java

@@ -0,0 +1,11 @@
+package com.homihq.db2rest.rest.read.v2.dto;
+
+import java.util.List;
+
+
+public class JoinDetail {
+
+    private String table;
+
+    private List<String> columnNames;
+}

src/main/java/com/homihq/db2rest/rest/read/v2/dto/ReadContextV2.java

@@ -25,6 +25,7 @@ public class ReadContextV2 {
     List<String> sorts;
     int limit;
     long offset;
+    List<String> joins;
 
 
     /* Processed attributes */

src/main/java/com/homihq/db2rest/rest/read/v2/processor/JoinProcessor.java

@@ -0,0 +1,23 @@
+package com.homihq.db2rest.rest.read.v2.processor;
+
+import com.homihq.db2rest.rest.read.v2.dto.ReadContextV2;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+import java.util.Objects;
+
+@Component
+@Slf4j
+@Order(4)
+public class JoinProcessor implements ReadPreProcessor{
+    @Override
+    public void process(ReadContextV2 readContextV2) {
+        if(Objects.nonNull(readContextV2.getJoins()) && !readContextV2.getJoins().isEmpty()) {
+            for(String join : readContextV2.getJoins()) {
+                log.info("Join - {}", join);
+
+            }
+        }
+    }
+}