Tokenizer pattern with special character not working

Elastic Stack Elasticsearch
1

'index' => 'contact',

            'body' => 
            [
                'settings' => 
                [
                    'number_of_shards' => 3,
                    'number_of_replicas' => 2,
                    "analysis"=>
                    [
                        "normalizer"=>[
                            "lowercase_normalizer"=> [
                                "type"=> "custom",
                                "filter"=> ["lowercase"]
                            ]
                        ],
                        "tokenizer" =>[
                            "comma" =>[
                                "type" => "pattern",
                                "pattern" => "|**|",
                            ]
                        ],
                        "analyzer" =>[
                            "comma" =>[
                                "type" => "custom",
                                "tokenizer" => "comma"
                            ]
                        ]
                    ]
                ],
                'mappings' => [
                   
                        '_source' => [
                            'enabled' => true
                        ],
                        'properties' => 
                        [
                          'appId' => 
                            [
                                'type' => 'long',
                               
                            ],
                        'bank' => [
                            "type" => "text",
                            "analyzer" => "comma"
                        ];
                   ]

This is the code iam using .
It is working when change pattern '||' to ','
But '||' this is the pattern i used . comma is not suitable for me

2

can you please provide sample documents and a full blown reproducible example that uses real JSON and not the string representation of a language, so that other people can locally reproduce this?

Also I have not fully understood what text sample is working and what is not working and what are the expected results. Please make sure that those things are clear and reproducible.

Thanks!

3

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