1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package comprehend
4
5import (
6	"context"
7	"fmt"
8	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
9	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
10	"github.com/aws/aws-sdk-go-v2/service/comprehend/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// Gets a list of the document classifiers that you have created.
16func (c *Client) ListDocumentClassifiers(ctx context.Context, params *ListDocumentClassifiersInput, optFns ...func(*Options)) (*ListDocumentClassifiersOutput, error) {
17	if params == nil {
18		params = &ListDocumentClassifiersInput{}
19	}
20
21	result, metadata, err := c.invokeOperation(ctx, "ListDocumentClassifiers", params, optFns, addOperationListDocumentClassifiersMiddlewares)
22	if err != nil {
23		return nil, err
24	}
25
26	out := result.(*ListDocumentClassifiersOutput)
27	out.ResultMetadata = metadata
28	return out, nil
29}
30
31type ListDocumentClassifiersInput struct {
32
33	// Filters the jobs that are returned. You can filter jobs on their name, status,
34	// or the date and time that they were submitted. You can only set one filter at a
35	// time.
36	Filter *types.DocumentClassifierFilter
37
38	// The maximum number of results to return in each page. The default is 100.
39	MaxResults *int32
40
41	// Identifies the next page of results to return.
42	NextToken *string
43}
44
45type ListDocumentClassifiersOutput struct {
46
47	// A list containing the properties of each job returned.
48	DocumentClassifierPropertiesList []types.DocumentClassifierProperties
49
50	// Identifies the next page of results to return.
51	NextToken *string
52
53	// Metadata pertaining to the operation's result.
54	ResultMetadata middleware.Metadata
55}
56
57func addOperationListDocumentClassifiersMiddlewares(stack *middleware.Stack, options Options) (err error) {
58	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListDocumentClassifiers{}, middleware.After)
59	if err != nil {
60		return err
61	}
62	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListDocumentClassifiers{}, middleware.After)
63	if err != nil {
64		return err
65	}
66	if err = addSetLoggerMiddleware(stack, options); err != nil {
67		return err
68	}
69	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
70		return err
71	}
72	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
73		return err
74	}
75	if err = addResolveEndpointMiddleware(stack, options); err != nil {
76		return err
77	}
78	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
79		return err
80	}
81	if err = addRetryMiddlewares(stack, options); err != nil {
82		return err
83	}
84	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
85		return err
86	}
87	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
88		return err
89	}
90	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
91		return err
92	}
93	if err = addClientUserAgent(stack); err != nil {
94		return err
95	}
96	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
97		return err
98	}
99	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
100		return err
101	}
102	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListDocumentClassifiers(options.Region), middleware.Before); err != nil {
103		return err
104	}
105	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
106		return err
107	}
108	if err = addResponseErrorMiddleware(stack); err != nil {
109		return err
110	}
111	if err = addRequestResponseLogging(stack, options); err != nil {
112		return err
113	}
114	return nil
115}
116
117// ListDocumentClassifiersAPIClient is a client that implements the
118// ListDocumentClassifiers operation.
119type ListDocumentClassifiersAPIClient interface {
120	ListDocumentClassifiers(context.Context, *ListDocumentClassifiersInput, ...func(*Options)) (*ListDocumentClassifiersOutput, error)
121}
122
123var _ ListDocumentClassifiersAPIClient = (*Client)(nil)
124
125// ListDocumentClassifiersPaginatorOptions is the paginator options for
126// ListDocumentClassifiers
127type ListDocumentClassifiersPaginatorOptions struct {
128	// The maximum number of results to return in each page. The default is 100.
129	Limit int32
130
131	// Set to true if pagination should stop if the service returns a pagination token
132	// that matches the most recent token provided to the service.
133	StopOnDuplicateToken bool
134}
135
136// ListDocumentClassifiersPaginator is a paginator for ListDocumentClassifiers
137type ListDocumentClassifiersPaginator struct {
138	options   ListDocumentClassifiersPaginatorOptions
139	client    ListDocumentClassifiersAPIClient
140	params    *ListDocumentClassifiersInput
141	nextToken *string
142	firstPage bool
143}
144
145// NewListDocumentClassifiersPaginator returns a new
146// ListDocumentClassifiersPaginator
147func NewListDocumentClassifiersPaginator(client ListDocumentClassifiersAPIClient, params *ListDocumentClassifiersInput, optFns ...func(*ListDocumentClassifiersPaginatorOptions)) *ListDocumentClassifiersPaginator {
148	if params == nil {
149		params = &ListDocumentClassifiersInput{}
150	}
151
152	options := ListDocumentClassifiersPaginatorOptions{}
153	if params.MaxResults != nil {
154		options.Limit = *params.MaxResults
155	}
156
157	for _, fn := range optFns {
158		fn(&options)
159	}
160
161	return &ListDocumentClassifiersPaginator{
162		options:   options,
163		client:    client,
164		params:    params,
165		firstPage: true,
166	}
167}
168
169// HasMorePages returns a boolean indicating whether more pages are available
170func (p *ListDocumentClassifiersPaginator) HasMorePages() bool {
171	return p.firstPage || p.nextToken != nil
172}
173
174// NextPage retrieves the next ListDocumentClassifiers page.
175func (p *ListDocumentClassifiersPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListDocumentClassifiersOutput, error) {
176	if !p.HasMorePages() {
177		return nil, fmt.Errorf("no more pages available")
178	}
179
180	params := *p.params
181	params.NextToken = p.nextToken
182
183	var limit *int32
184	if p.options.Limit > 0 {
185		limit = &p.options.Limit
186	}
187	params.MaxResults = limit
188
189	result, err := p.client.ListDocumentClassifiers(ctx, &params, optFns...)
190	if err != nil {
191		return nil, err
192	}
193	p.firstPage = false
194
195	prevToken := p.nextToken
196	p.nextToken = result.NextToken
197
198	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
199		p.nextToken = nil
200	}
201
202	return result, nil
203}
204
205func newServiceMetadataMiddleware_opListDocumentClassifiers(region string) *awsmiddleware.RegisterServiceMetadata {
206	return &awsmiddleware.RegisterServiceMetadata{
207		Region:        region,
208		ServiceID:     ServiceID,
209		SigningName:   "comprehend",
210		OperationName: "ListDocumentClassifiers",
211	}
212}
213