org.h2.result.Row Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.result;
import org.h2.store.Data;
import org.h2.value.Value;
/**
* Represents a row in a table.
*/
public interface Row extends SearchRow {
int MEMORY_CALCULATE = -1;
Row[] EMPTY_ARRAY = {};
/**
* Get the number of bytes required for the data.
*
* @param dummy the template buffer
* @return the number of bytes
*/
int getByteCount(Data dummy);
/**
* Check if this is an empty row.
*
* @return {@code true} if the row is empty
*/
boolean isEmpty();
/**
* Mark the row as deleted.
*
* @param deleted deleted flag
*/
void setDeleted(boolean deleted);
/**
* Check if the row is deleted.
*
* @return {@code true} if the row is deleted
*/
boolean isDeleted();
/**
* Get values.
*
* @return values
*/
Value[] getValueList();
/**
* Check whether this row and the specified row share the same underlying
* data with values. This method must return {@code false} when values are
* not equal and may return either {@code true} or {@code false} when they
* are equal. This method may be used only for optimizations and should not
* perform any slow checks, such as equality checks for all pairs of values.
*
* @param other
* the other row
* @return {@code true} if rows share the same underlying data,
* {@code false} otherwise or when unknown
*/
boolean hasSharedData(Row other);
}