diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/DatabaseUtil.java')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/DatabaseUtil.java | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/DatabaseUtil.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/DatabaseUtil.java new file mode 100644 index 000000000..c18e5cabd --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/DatabaseUtil.java @@ -0,0 +1,36 @@ +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; + } +} |