Querybase | Bringing the where statement to the Firebase Database | Database library

I have a dropdown list ddlProjecsFilter that I populate with the names of all projects in my database.

On page load, I show this dropdown list and when a person selects a Name, they get all the information regarding that Project Name. However, I have two extra filters based on character input (Funder, Type).

When writing the query like this, the dropdown list has no elements in it, yet the two other filters work.

I have to write a query that has to return if my object has a parking or not. In the index the parking are stored as integer, to indicate how many parking places belong to the object. In the query the property is boolean, to indicate does we want or not to search if the object has parking places.

I tried this with conditional query, but as I see now it is wrong way.

My question is, how to write the HasParking() function, where I can check if the field value is greater then 0, that indicates that the object has parking place(s).

This is how I started:

My base Request class looks like this:

I am trying mysql to hdfs data ingestion using gobblin. While running mysql-to-gobblin.pull using steps below:

1) start hadoop:
sbin\start-all.cmd

2) start mysql service:
sudo service mysql start

3) set GOBBLIN_WORK_DIR:
export GOBBLIN_WORK_DIR=/mnt/c/users/name/incubator-gobblin/GOBBLIN_WORK_DIR

4) set GOBBLIN_JOB_CONFIG_DIR
export GOBBLIN_JOB_CONFIG_DIR=/mnt/c/users/name/incubator-gobblin/GOBBLIN_JOB_CONFIG_DIR

5) Start standalone
bin/gobblin.sh service standalone start --jars /mnt/C/Users/name/incubator-gobblin/build/gobblin-sql/libs/gobblin-sql-0.15.0.jar

gives below error

I am tring to ingest data from mysql table to hdfs. but it is giving me below error