com.amazonaws.services.dynamodbv2.model.QueryResult Maven / Gradle / Ivy
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/*
* Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not
* use this file except in compliance with the License. A copy of the License is
* located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.amazonaws.services.dynamodbv2.model;
import java.io.Serializable;
/**
*
* Represents the output of a Query operation.
*
*/
public class QueryResult implements Serializable, Cloneable {
/**
*
* An array of item attributes that match the query criteria. Each element
* in this array consists of an attribute name and the value for that
* attribute.
*
*/
private java.util.List> items;
/**
*
* The number of items in the response.
*
*
* If you used a QueryFilter in the request, then Count is the
* number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the filter was
* applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*
*/
private Integer count;
/**
*
* The number of items evaluated, before any QueryFilter is applied.
* A high ScannedCount value with few, or no, Count results
* indicates an inefficient Query operation. For more information,
* see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
*
* If you did not use a filter in the request, then ScannedCount is
* the same as Count.
*
*/
private Integer scannedCount;
/**
*
* The primary key of the item where the operation stopped, inclusive of the
* previous result set. Use this value to start a new operation, excluding
* this value in the new request.
*
*
* If LastEvaluatedKey is empty, then the "last page" of results has
* been processed and there is no more data to be retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily mean
* that there is more data in the result set. The only way to know when you
* have reached the end of the result set is when LastEvaluatedKey is
* empty.
*
*/
private java.util.Map lastEvaluatedKey;
private ConsumedCapacity consumedCapacity;
/**
*
* An array of item attributes that match the query criteria. Each element
* in this array consists of an attribute name and the value for that
* attribute.
*
*
* @return An array of item attributes that match the query criteria. Each
* element in this array consists of an attribute name and the value
* for that attribute.
*/
public java.util.List> getItems() {
return items;
}
/**
*
* An array of item attributes that match the query criteria. Each element
* in this array consists of an attribute name and the value for that
* attribute.
*
*
* @param items
* An array of item attributes that match the query criteria. Each
* element in this array consists of an attribute name and the value
* for that attribute.
*/
public void setItems(
java.util.Collection> items) {
if (items == null) {
this.items = null;
return;
}
this.items = new java.util.ArrayList>(
items);
}
/**
*
* An array of item attributes that match the query criteria. Each element
* in this array consists of an attribute name and the value for that
* attribute.
*
*
* NOTE: This method appends the values to the existing list (if
* any). Use {@link #setItems(java.util.Collection)} or
* {@link #withItems(java.util.Collection)} if you want to override the
* existing values.
*
*
* @param items
* An array of item attributes that match the query criteria. Each
* element in this array consists of an attribute name and the value
* for that attribute.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withItems(java.util.Map... items) {
if (this.items == null) {
setItems(new java.util.ArrayList>(
items.length));
}
for (java.util.Map ele : items) {
this.items.add(ele);
}
return this;
}
/**
*
* An array of item attributes that match the query criteria. Each element
* in this array consists of an attribute name and the value for that
* attribute.
*
*
* @param items
* An array of item attributes that match the query criteria. Each
* element in this array consists of an attribute name and the value
* for that attribute.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withItems(
java.util.Collection> items) {
setItems(items);
return this;
}
/**
*
* The number of items in the response.
*
*
* If you used a QueryFilter in the request, then Count is the
* number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the filter was
* applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*
*
* @param count
* The number of items in the response.
*
* If you used a QueryFilter in the request, then Count
* is the number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the
* filter was applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*/
public void setCount(Integer count) {
this.count = count;
}
/**
*
* The number of items in the response.
*
*
* If you used a QueryFilter in the request, then Count is the
* number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the filter was
* applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*
*
* @return The number of items in the response.
*
* If you used a QueryFilter in the request, then
* Count is the number of items returned after the filter was
* applied, and ScannedCount is the number of matching items
* before the filter was applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*/
public Integer getCount() {
return this.count;
}
/**
*
* The number of items in the response.
*
*
* If you used a QueryFilter in the request, then Count is the
* number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the filter was
* applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
*
*
* @param count
* The number of items in the response.
*
* If you used a QueryFilter in the request, then Count
* is the number of items returned after the filter was applied, and
* ScannedCount is the number of matching items before the
* filter was applied.
*
*
* If you did not use a filter in the request, then Count and
* ScannedCount are the same.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withCount(Integer count) {
setCount(count);
return this;
}
/**
*
* The number of items evaluated, before any QueryFilter is applied.
* A high ScannedCount value with few, or no, Count results
* indicates an inefficient Query operation. For more information,
* see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
*
* If you did not use a filter in the request, then ScannedCount is
* the same as Count.
*
*
* @param scannedCount
* The number of items evaluated, before any QueryFilter is
* applied. A high ScannedCount value with few, or no,
* Count results indicates an inefficient Query
* operation. For more information, see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
* If you did not use a filter in the request, then
* ScannedCount is the same as Count.
*/
public void setScannedCount(Integer scannedCount) {
this.scannedCount = scannedCount;
}
/**
*
* The number of items evaluated, before any QueryFilter is applied.
* A high ScannedCount value with few, or no, Count results
* indicates an inefficient Query operation. For more information,
* see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
*
* If you did not use a filter in the request, then ScannedCount is
* the same as Count.
*
*
* @return The number of items evaluated, before any QueryFilter is
* applied. A high ScannedCount value with few, or no,
* Count results indicates an inefficient Query
* operation. For more information, see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
* If you did not use a filter in the request, then
* ScannedCount is the same as Count.
*/
public Integer getScannedCount() {
return this.scannedCount;
}
/**
*
* The number of items evaluated, before any QueryFilter is applied.
* A high ScannedCount value with few, or no, Count results
* indicates an inefficient Query operation. For more information,
* see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
*
* If you did not use a filter in the request, then ScannedCount is
* the same as Count.
*
*
* @param scannedCount
* The number of items evaluated, before any QueryFilter is
* applied. A high ScannedCount value with few, or no,
* Count results indicates an inefficient Query
* operation. For more information, see Count and ScannedCount in the Amazon DynamoDB Developer
* Guide.
*
* If you did not use a filter in the request, then
* ScannedCount is the same as Count.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withScannedCount(Integer scannedCount) {
setScannedCount(scannedCount);
return this;
}
/**
*
* The primary key of the item where the operation stopped, inclusive of the
* previous result set. Use this value to start a new operation, excluding
* this value in the new request.
*
*
* If LastEvaluatedKey is empty, then the "last page" of results has
* been processed and there is no more data to be retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily mean
* that there is more data in the result set. The only way to know when you
* have reached the end of the result set is when LastEvaluatedKey is
* empty.
*
*
* @return The primary key of the item where the operation stopped,
* inclusive of the previous result set. Use this value to start a
* new operation, excluding this value in the new request.
*
* If LastEvaluatedKey is empty, then the "last page" of
* results has been processed and there is no more data to be
* retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily
* mean that there is more data in the result set. The only way to
* know when you have reached the end of the result set is when
* LastEvaluatedKey is empty.
*/
public java.util.Map getLastEvaluatedKey() {
return lastEvaluatedKey;
}
/**
*
* The primary key of the item where the operation stopped, inclusive of the
* previous result set. Use this value to start a new operation, excluding
* this value in the new request.
*
*
* If LastEvaluatedKey is empty, then the "last page" of results has
* been processed and there is no more data to be retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily mean
* that there is more data in the result set. The only way to know when you
* have reached the end of the result set is when LastEvaluatedKey is
* empty.
*
*
* @param lastEvaluatedKey
* The primary key of the item where the operation stopped, inclusive
* of the previous result set. Use this value to start a new
* operation, excluding this value in the new request.
*
* If LastEvaluatedKey is empty, then the "last page" of
* results has been processed and there is no more data to be
* retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily
* mean that there is more data in the result set. The only way to
* know when you have reached the end of the result set is when
* LastEvaluatedKey is empty.
*/
public void setLastEvaluatedKey(
java.util.Map lastEvaluatedKey) {
this.lastEvaluatedKey = lastEvaluatedKey;
}
/**
*
* The primary key of the item where the operation stopped, inclusive of the
* previous result set. Use this value to start a new operation, excluding
* this value in the new request.
*
*
* If LastEvaluatedKey is empty, then the "last page" of results has
* been processed and there is no more data to be retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily mean
* that there is more data in the result set. The only way to know when you
* have reached the end of the result set is when LastEvaluatedKey is
* empty.
*
*
* @param lastEvaluatedKey
* The primary key of the item where the operation stopped, inclusive
* of the previous result set. Use this value to start a new
* operation, excluding this value in the new request.
*
* If LastEvaluatedKey is empty, then the "last page" of
* results has been processed and there is no more data to be
* retrieved.
*
*
* If LastEvaluatedKey is not empty, it does not necessarily
* mean that there is more data in the result set. The only way to
* know when you have reached the end of the result set is when
* LastEvaluatedKey is empty.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withLastEvaluatedKey(
java.util.Map lastEvaluatedKey) {
setLastEvaluatedKey(lastEvaluatedKey);
return this;
}
public QueryResult addLastEvaluatedKeyEntry(String key, AttributeValue value) {
if (null == this.lastEvaluatedKey) {
this.lastEvaluatedKey = new java.util.HashMap();
}
if (this.lastEvaluatedKey.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.lastEvaluatedKey.put(key, value);
return this;
}
/**
* Removes all the entries added into LastEvaluatedKey. <p> Returns a
* reference to this object so that method calls can be chained together.
*/
public QueryResult clearLastEvaluatedKeyEntries() {
this.lastEvaluatedKey = null;
return this;
}
/**
* @param consumedCapacity
*/
public void setConsumedCapacity(ConsumedCapacity consumedCapacity) {
this.consumedCapacity = consumedCapacity;
}
/**
* @return
*/
public ConsumedCapacity getConsumedCapacity() {
return this.consumedCapacity;
}
/**
* @param consumedCapacity
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public QueryResult withConsumedCapacity(ConsumedCapacity consumedCapacity) {
setConsumedCapacity(consumedCapacity);
return this;
}
/**
* Returns a string representation of this object; useful for testing and
* debugging.
*
* @return A string representation of this object.
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{");
if (getItems() != null)
sb.append("Items: " + getItems() + ",");
if (getCount() != null)
sb.append("Count: " + getCount() + ",");
if (getScannedCount() != null)
sb.append("ScannedCount: " + getScannedCount() + ",");
if (getLastEvaluatedKey() != null)
sb.append("LastEvaluatedKey: " + getLastEvaluatedKey() + ",");
if (getConsumedCapacity() != null)
sb.append("ConsumedCapacity: " + getConsumedCapacity());
sb.append("}");
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (obj instanceof QueryResult == false)
return false;
QueryResult other = (QueryResult) obj;
if (other.getItems() == null ^ this.getItems() == null)
return false;
if (other.getItems() != null
&& other.getItems().equals(this.getItems()) == false)
return false;
if (other.getCount() == null ^ this.getCount() == null)
return false;
if (other.getCount() != null
&& other.getCount().equals(this.getCount()) == false)
return false;
if (other.getScannedCount() == null ^ this.getScannedCount() == null)
return false;
if (other.getScannedCount() != null
&& other.getScannedCount().equals(this.getScannedCount()) == false)
return false;
if (other.getLastEvaluatedKey() == null
^ this.getLastEvaluatedKey() == null)
return false;
if (other.getLastEvaluatedKey() != null
&& other.getLastEvaluatedKey().equals(
this.getLastEvaluatedKey()) == false)
return false;
if (other.getConsumedCapacity() == null
^ this.getConsumedCapacity() == null)
return false;
if (other.getConsumedCapacity() != null
&& other.getConsumedCapacity().equals(
this.getConsumedCapacity()) == false)
return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode
+ ((getItems() == null) ? 0 : getItems().hashCode());
hashCode = prime * hashCode
+ ((getCount() == null) ? 0 : getCount().hashCode());
hashCode = prime
* hashCode
+ ((getScannedCount() == null) ? 0 : getScannedCount()
.hashCode());
hashCode = prime
* hashCode
+ ((getLastEvaluatedKey() == null) ? 0 : getLastEvaluatedKey()
.hashCode());
hashCode = prime
* hashCode
+ ((getConsumedCapacity() == null) ? 0 : getConsumedCapacity()
.hashCode());
return hashCode;
}
@Override
public QueryResult clone() {
try {
return (QueryResult) super.clone();
} catch (CloneNotSupportedException e) {
throw new IllegalStateException(
"Got a CloneNotSupportedException from Object.clone() "
+ "even though we're Cloneable!", e);
}
}
}