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package org.sufficientlysecure.keychain.util;
import android.text.TextUtils;
/**
* Shamelessly copied from android.database.DatabaseUtils
*/
public class DatabaseUtil {
/**
* Concatenates two SQL WHERE clauses, handling empty or null values.
*/
public static String concatenateWhere(String a, String b) {
if (TextUtils.isEmpty(a)) {
return b;
}
if (TextUtils.isEmpty(b)) {
return a;
}
return "(" + a + ") AND (" + b + ")";
}
/**
* Appends one set of selection args to another. This is useful when adding a selection
* argument to a user provided set.
*/
public static String[] appendSelectionArgs(String[] originalValues, String[] newValues) {
if (originalValues == null || originalValues.length == 0) {
return newValues;
}
String[] result = new String[originalValues.length + newValues.length ];
System.arraycopy(originalValues, 0, result, 0, originalValues.length);
System.arraycopy(newValues, 0, result, originalValues.length, newValues.length);
return result;
}
}
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