com.netflix.astyanax.model.ColumnMap Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2011 Netflix
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.netflix.astyanax.model;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
import java.util.UUID;
public interface ColumnMap extends Iterable> {
/**
* Return the underlying map
* @return
*/
Map> asMap();
/**
* Queries column by name
*
* @param columnName
* @return an instance of a column or null if not found
* @throws Exception
*/
Column get(C columnName);
/**
* Return value as a string
*
* @return
*/
String getString(C columnName, String defaultValue);
/**
* Return value as an integer
*
* @return
*/
Integer getInteger(C columnName, Integer defaultValue);
/**
* Return value as a double
*
* @return
*/
Double getDouble(C columnName, Double defaultValue);
/**
* Return value as a long. Use this to get the value of a counter column
*
* @return
*/
Long getLong(C columnName, Long defaultValue);
/**
* Get the raw byte[] value
*
* @return
*/
byte[] getByteArray(C columnName, byte[] defaultValue);
/**
* Get value as a boolean
*
* @return
*/
Boolean getBoolean(C columnName, Boolean defaultValue);
/**
* Get the raw ByteBuffer value
*
* @return
*/
ByteBuffer getByteBuffer(C columnName, ByteBuffer defaultValue);
/**
* Get the value as a date object
*
* @return
*/
Date getDate(C columnName, Date defaultValue);
/**
* Get the value as a UUID
*
* @return
*/
UUID getUUID(C columnName, UUID defaultValue);
/**
* Indicates if the list of columns is empty
*
* @return
*/
boolean isEmpty();
/**
* returns the number of columns in the row
*
* @return
*/
int size();
/**
* Add a single column to the collection
* @param column
* @return
*/
OrderedColumnMap add(Column column);
/**
* Add a set of columns to the collection
* @param columns
* @return
*/
OrderedColumnMap addAll(Collection> columns);
}