forked from GitHub-Mirror/riotX-android
46 lines
1.5 KiB
Kotlin
46 lines
1.5 KiB
Kotlin
/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package im.vector.matrix.android.internal.database
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import androidx.lifecycle.LiveData
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import io.realm.*
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class RealmLiveData<T : RealmModel>(private val realmConfiguration: RealmConfiguration,
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private val query: (Realm) -> RealmQuery<T>) : LiveData<RealmResults<T>>() {
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private val listener = RealmChangeListener<RealmResults<T>> { results ->
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value = results
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}
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private var realm: Realm? = null
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private var results: RealmResults<T>? = null
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override fun onActive() {
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val realm = Realm.getInstance(realmConfiguration)
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val results = query.invoke(realm).findAllAsync()
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results.addChangeListener(listener)
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this.realm = realm
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this.results = results
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}
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override fun onInactive() {
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results?.removeChangeListener(listener)
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results = null
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realm?.close()
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realm = null
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}
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} |