147 lines
4.5 KiB
Kotlin
147 lines
4.5 KiB
Kotlin
package jp.juggler.subwaytooter.table
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import android.content.ContentValues
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import android.database.sqlite.SQLiteDatabase
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import jp.juggler.subwaytooter.App1
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import jp.juggler.util.LogCategory
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import jp.juggler.util.TableCompanion
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import java.util.*
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object TagSet : TableCompanion {
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private val log = LogCategory("TagSet")
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override val table = "tag_set"
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private const val COL_TIME_SAVE = "time_save"
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private const val COL_TAG = "tag" // タグ。先頭の#を含まない
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private const val prefix_search_where = "$COL_TAG like ? escape '$'"
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private val prefix_search_where_arg = object : ThreadLocal<Array<String?>>() {
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override fun initialValue(): Array<String?> {
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return Array(1) { null }
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}
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}
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override fun onDBCreate(db: SQLiteDatabase) {
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log.d("onDBCreate!")
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db.execSQL(
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"""create table if not exists $table
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(_id INTEGER PRIMARY KEY
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,$COL_TIME_SAVE integer not null
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,$COL_TAG text not null
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)""".trimIndent()
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)
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db.execSQL("create unique index if not exists ${table}_tag on $table($COL_TAG)")
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db.execSQL("create index if not exists ${table}_time on $table($COL_TIME_SAVE)")
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}
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override fun onDBUpgrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
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if (oldVersion < 15 && newVersion >= 15) {
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onDBCreate(db)
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}
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}
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// XXX: タグ履歴って掃除する必要あるかな？
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// fun deleteOld(now : Long) {
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// try {
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// // 古いデータを掃除する
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// val expire = now - 86400000L * 365
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// App1.database.delete(table, COL_TIME_SAVE + "<?", arrayOf(expire.toString()))
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//
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// } catch(ex : Throwable) {
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// warning.e(ex, "deleteOld failed.")
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// }
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// }
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// public static void save1( long now, String acct ){
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// try{
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//
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// ContentValues cv = new ContentValues();
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// cv.put( COL_TIME_SAVE, now );
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// cv.put( COL_ACCT, acct );
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// App1.getDB().replace( table, null, cv );
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// }catch( Throwable ex ){
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// warning.e( ex, "save failed." );
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// }
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// }
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fun saveList(now: Long, srcList: ArrayList<String?>, offset: Int, length: Int) {
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try {
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val cv = ContentValues()
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cv.put(COL_TIME_SAVE, now)
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var bOK = false
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val db = App1.database
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db.execSQL("BEGIN TRANSACTION")
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try {
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for (i in 0 until length) {
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val acct = srcList[i + offset] ?: continue
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cv.put(COL_TAG, acct)
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db.replace(table, null, cv)
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}
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bOK = true
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} catch (ex: Throwable) {
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log.trace(ex)
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log.e(ex, "saveList failed.")
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}
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if (bOK) {
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db.execSQL("COMMIT TRANSACTION")
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} else {
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db.execSQL("ROLLBACK TRANSACTION")
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}
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} catch (ex: Throwable) {
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log.trace(ex)
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log.e(ex, "saveList failed.")
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}
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}
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private fun makePattern(src: String): String {
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val sb = StringBuilder()
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// エスケープしながらコピー
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for (element in src) {
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when (element) {
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'%', '_', '$' -> sb.append('$')
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}
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sb.append(element)
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}
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// 前方一致検索にするため、末尾に%をつける
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sb.append('%')
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return sb.toString()
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}
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fun searchPrefix(prefix: String, limit: Int): ArrayList<CharSequence> {
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val dst = ArrayList<CharSequence>()
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try {
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val where_arg = prefix_search_where_arg.get() ?: arrayOfNulls<String?>(1)
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where_arg[0] = makePattern(prefix)
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App1.database.query(
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table,
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null,
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prefix_search_where,
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where_arg,
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null,
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null,
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"$COL_TAG asc limit $limit"
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).use { cursor ->
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dst.ensureCapacity(cursor.count)
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val idx_acct = cursor.getColumnIndex(COL_TAG)
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while (cursor.moveToNext()) {
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dst.add("#" + cursor.getString(idx_acct))
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}
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}
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} catch (ex: Throwable) {
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log.trace(ex)
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log.e(ex, "searchPrefix failed.")
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}
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return dst
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}
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}
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