package com.alvazan.orm.layer0.base;
import com.alvazan.orm.api.exc.RowNotFoundException;
import com.alvazan.orm.api.z5api.NoSqlSession;
import com.alvazan.orm.api.z8spi.KeyValue;
import com.alvazan.orm.api.z8spi.Row;
import com.alvazan.orm.api.z8spi.iter.AbstractCursor;
import com.alvazan.orm.impl.meta.data.MetaClass;
import com.alvazan.orm.impl.meta.data.MetaIdField;
public class CursorRow<T> extends AbstractCursor<KeyValue<T>>{
private MetaClass<T> meta;
private String query;
private AbstractCursor<KeyValue<Row>> cursor;
private NoSqlSession session;
public CursorRow(NoSqlSession session, MetaClass<T> meta2, AbstractCursor<KeyValue<Row>> cursor,
String query2) {
this.session = session;
this.meta = meta2;
this.cursor = cursor;
this.query = query2;
}
@Override
public void beforeFirst() {
cursor.beforeFirst();
}
@Override
public Holder<KeyValue<T>> nextImpl() {
Holder<KeyValue<Row>> nextImpl = cursor.nextImpl();
if(nextImpl == null)
return null;
KeyValue<Row> kv = nextImpl.getValue();
KeyValue<T> result = translateRow(kv);
return new Holder<KeyValue<T>>(result);
}
@SuppressWarnings("rawtypes")
private KeyValue<T> translateRow(KeyValue<Row> kv) {
Row row = kv.getValue();
Object key = kv.getKey();
KeyValue<T> keyVal;
if(row == null) {
keyVal = new KeyValue<T>();
MetaIdField idMeta = meta.getIdField();
byte[] nonVirtKey = idMeta.unformVirtRowKey((byte[]) key);
Object obj = meta.getIdField().translateFromBytes(nonVirtKey);
if(query != null) {
RowNotFoundException exc = new RowNotFoundException("Your query="+query+" contained a value with a pk where that entity no longer exists in the nosql store");
keyVal.setException(exc);
}
keyVal.setKey(obj);
} else {
keyVal = meta.translateFromRow(row, session);
}
return keyVal;
}
}