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.\" ========================================================================
.\"
.IX Title "Catmandu::Fix::Bind::hashmap 3pm"
.TH Catmandu::Fix::Bind::hashmap 3pm "2017-01-04" "perl v5.24.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Catmandu::Fix::Bind::hashmap \- a binder to add key/value pairs to an internal hashmap
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 5
\& # Find all ISBN in a stream
\& do hashmap(exporter: JSON, join: \*(Aq,\*(Aq)
\&    copy_field(isbn,key)
\&    copy_field(_id,value)
\& end
\&
\& # will export to the YAML exporter a hash map containing all isbn occurrences in the stream
\&
\& { "_id": "ISBN1" , "value": "0121,12912,121" }
\& { "_id": "ISBN2" , "value": "102012" }
\&
\& # Count the number of ISBN occurrences in a stream
\& # File: count.fix:
\& do hashmap(count: 1)
\&    copy_field(isbn,key)
\& end
\&
\& # Use the Null exporter to suppress the normal output
\& $ cat /tmp/data.json | catmandu convert JSON \-\-fix count.fix to Null
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The hashmap binder will insert all key/value pairs given to a internal hashmap that can be exported
using an Catmandu::Exporter.
.PP
If the key is an \s-1ARRAY,\s0 then multiple key/value pairs will be inserted into the hashmap.
.PP
By default all the values will be added as an array to the hashmap. Every key will have one
or more values.
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
.SS "exporter: \s-1EXPORTER\s0"
.IX Subsection "exporter: EXPORTER"
The name of an exporter to send the results to. Default: \s-1JSON \s0 Extra parameters can be added:
.PP
.Vb 3
\&    do hashmap(exporter: JSON, file:/tmp/data.json, count: 1)
\&      ...
\&    end
.Ve
.SS "store: \s-1STORE\s0"
.IX Subsection "store: STORE"
Send the output to a store instead of an exporter. Extra parameters can be added:
.PP
.Vb 3
\&    do hashmap(store: MongoDB, database_name: test, bag: data, count: 1)
\&      ...
\&    end
.Ve
.SS "uniq: 0|1"
.IX Subsection "uniq: 0|1"
All the values for the a key will be unique.
.SS "join: \s-1CHAR\s0"
.IX Subsection "join: CHAR"
Join all the values of a key using a delimiter.
.SS "count: 0|1"
.IX Subsection "count: 0|1"
Don't store the values only count the number of key occurrences.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Catmandu::Fix::Bind