Added function in fdb

Added functions for following

• Function to get bucket by bucket id
• Function fetch multiple resources by query
• Function to fetch file paths by query

dalmdl/corefdb/filetype/pack.go

@@ -578,6 +578,49 @@ func (p *PackFile) ReadMedia(recordID string) ([]byte, *gjson.Result, error) {
 	return dataByte, &metaDataObj, nil
 }
 
+func (p *PackFile) ReadMediaByQuery(inFileIndexQueries []string) (map[string][]byte, map[string]gjson.Result, error) {
+	f := p.Fp
+	indexData, err := getInFileIndexData(f)
+	if err != nil {
+		loggermdl.LogError("index data not found: ", f.Name(), err)
+		return nil, nil, err
+	}
+	indexRows := indexData
+	// indexRows := indexData.Get(`#[fileType==` + requestedFileType + `]#`)
+	for i := 0; i < len(inFileIndexQueries); i++ {
+		indexRows = indexRows.Get(inFileIndexQueries[i] + "#")
+	}
+	if indexRows.String() == "" {
+		loggermdl.LogError("data not found")
+		return nil, nil, errormdl.Wrap("data not found")
+	}
+	dataMap := make(map[string][]byte, 0)
+	metaDataMap := make(map[string]gjson.Result, 0)
+	for _, indexRow := range indexRows.Array() {
+		startOffSet := indexRow.Get("startOffset").Int()
+		dataSize := indexRow.Get("dataSize").Int()
+		if startOffSet == 0 || dataSize == 0 {
+			return nil, nil, errormdl.Wrap("data not found")
+		}
+		dataByte, err := getFileDataFromPack(f, startOffSet, dataSize, nil, nil)
+		if err != nil {
+			loggermdl.LogError(err)
+			return nil, nil, err
+		}
+		recordID := indexRow.Get("recordID").String()
+		if recordID == "" {
+			return nil, nil, errormdl.Wrap("record id not found")
+		}
+		data, _ := sjson.Set("", "requiredData", indexRow.Get("requiredData").String())
+		// data, _ = sjson.Set(data, "infileIndex", indexData.String())
+		metaDataObj := gjson.Parse(data)
+		dataMap[recordID] = dataByte
+		metaDataMap[recordID] = metaDataObj
+	}
+
+	return dataMap, metaDataMap, nil
+}
+
 func (p *PackFile) RemoveMedia(recordID string) error {
 	queries := []string{`#[recordID=` + recordID + `]`}
 	_, err := p.Remove(queries)