Develop Reference

Sugar ORM cannot query column with boolean values

I'm using Sugar ORM to query a list of apps. I have a boolean column for tagging fields in this using:
#Setter #Getter public boolean isNew = false;
Now after API call I will update and save the record to tag all new apps and then for display I will just query it using:
List<AppsModel> app_list = AppsModel.find(AppsModel.class, "is_new = ?", "true");
Problem is that it returns 0 entry where it to have 3 on my end. To check I get all the list and check the column one by one to check its values:
List<AppsModel> test = AppsModel.listAll(AppsModel.class);
for(int i=0;i<test.size();i++){
Log.e("Test app size", String.valueOf(test.get(i).isNew()));
}
And it returns 3 as expected with true values. I can make use of this loop for list but I don't want to as I want to keep my code clean as possible.
Am I missing something here?

Okay I found the answer here from satyan himself
So basically, using "true" will match it as String. So instead use:
List<AppsModel> app_list = AppsModel.find(AppsModel.class, "is_new = ?", "1");
As SQlite store boolean values as 0 and 1.

Android Db Insert ContentValues

I'm having a problem with a ContentValues ​​that insert data into a db, then my situation is that I have to enter the pairs of values ​​that are being debugged, before insertion into the database, but then it just gives me I enter into the database, here is the code and then some screenshots.
public boolean insertElement(Element element) {
long ret = manager.db.insert(this.getTableName(element), null,
this.getContentValues(element, true));
if (ret == -1)
return false;
element.id = ret;
return true;
}
getTableName is my method to return the name of the table and that has always worked.
The problem is that I enter all the values ​​belonging to the value named "tipo", which is not included despite both within the content values.
This are some screenShot:
http://imageshack.us/photo/my-images/209/vyf.jpg/ After Insert
http://imageshack.us/photo/my-images/854/z2ua.png/ Element-ContentValues
Thanks

As per I can see the problem lies in your getContentValues Method . Can you give some detail about this method and you table structure as it will help me to find out the problem.
Thanks.

How to determine if a column is boolean from cursor object?

I've result of a select query in a cursor object. I've some Boolean columns in the table. The value for Boolean type in SQLite is 0 or 1 depending on if they are false or true respectively. There are columns of int type too which can have value as 0 or 1 or other integer value. I want to return the value of a column from the cursor as,
if column is of boolean type
return true if value = 1
return false if value = 0
else
return the same value
How can I accomplish this?

How to determine if a column is boolean from cursor object?
So at first, SQLite does not have booleans type only integer, string, float, blob. So my suggestion is simply test value for int column and based on result perform appropriate action.
Cursor c = db.rawQuery(query, whereArgs);
int value = 0;
String[] intColumnNames = {columns};
int index = 0;
if (c.moveToFirst()) {
while (index < intColumnNames.length) {
do {
value = c.getInt(c.getColumnIndex(intColumnNames[index]));
switch (value) {
case 0:
// do some action
break;
case 1:
// do some action
break;
default:
// do some action for other cases
break;
}
} while(c.moveToNext());
index++;
}
}

As I have not faced similar problem before So I cannot post a gurranteed answer. but your question seems really interesting and after searching a bit I think one solution might be an option..
at first step before reading data determing the datatype of the column. For this the following links may be helpful
https://stackoverflow.com/a/6298521/931982
https://stackoverflow.com/a/3106349/931982
Then if you find that the column type is boolean then follow any of the solution provided by other two member.
N.B. it is not a confirmed answer, just posted my thinking. I would have commented this but it is too large to write in comment :(

While its true that SQLite doesn't have a BOOLEAN storage type, there's nothing to stop you defining a column with BOOLEAN as a data type. It will be stored as NUMERIC. Your application can use PRAGMA table_info( to get the data type and only do your true/false check if it is BOOLEAN.

try this
int columnNumber = 11;
while (cursor.moveToNext()) {
if( cursor.getInt(columnNumber) > 0){
//true
}
}
As there is no Boolean Data type in sqlite to use boolean you need to have data type INTEGER
SQLite does not have a separate Boolean storage class. Instead, Boolean values are stored as integers 0 (false) and 1 (true).
More Details

Reading a value from a database

I have a database in my app with several columns of which 3 are: _id name selected.
Now, I want to read a single selected value from a row with the name being a string I get from some code. What would be the best way to do this?
Thanks
P.S. I am getting that value to check if it's 0 or 1 (only two possible values), so I want to ask how to make a kind of an if statement in the return field? I have seen some people do it with something resembling this: return true ? ... false
EDIT:
Okay, this is my code atm, haven't checked it yet since I need to do some other things to get it all up, but I think there may be a better way to do this.
public boolean isBandSelected(String name) {
// TODO Auto-generated method stub
Cursor cursor = mDb.query("bands", new String[] { "selected" }, "name="
+ name, null, null, null, null);
int index = cursor.getColumnIndex("selected");
String selected = cursor.getString(index);
return selected == "1";
}

You can use regular expression to match rows whose name field being string. Many databases can support regular expression.
The ternary operator(? :) can be used to make return statement like this.
return value == 0 ? false : true
But it depends on what kind of data type you what to return. Code above returns boolean data type.
The last line of your code above will always return false. This is because the == operator compares the reference of the two objects. you can use:
return "1".equals(selected);

Check if SQL integer field is empty

I try to get an Item out of my SQL db in android, everything goes well, the only thing I am struggling with is to get the INTEGER value is there is nothing filled in in the DB (null?)
So I first initialize it, then get the Integer value out of the DB and then assign it to an instance of my class. I was once told that if it will get nothing out of the DB it will keep the initialized value, but this might be wrong? I use now:
int score = 100;
score = c.getInt(11);
q.setScore(score);

I was once told that if it will get nothing out of the DB it will keep the initialized value
That is true for Embedded SQL. You seem to be using a resultset object, so it is not true.
Resultset objects typically return 0 if you try to get a numeric null value from a column.
Use c.wasNull() to check if the value you just read was null and not 0.
EDIT (added the code from Jack's comment):
int score;
if (c.isNull(11)) {
score = 100;
} else {
score = c.getInt(11);
}
q.setScore(score);

http://developer.android.com/reference/android/database/Cursor.html#getInt(int)
*public abstract int getInt (int columnIndex) Since: API Level 1 Returns the value of the requested column as an int. The result and
whether this method throws an exception when the column value is null,
the column type is not an integral type, or the integer value is
outside the range [Integer.MIN_VALUE, Integer.MAX_VALUE] is
implementation-defined. Parameters columnIndex the zero-based index of
the target column. Returns the value of that column as an int.*