FEED IMPORT BASE

Project page: https://drupal.org/project/feed_import
Developers info: https://drupal.org/node/2190383

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About Feed Import Base
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This module provides basic import functionality and abstractization supporting
all entity types.

The reader (source)
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Reader's job is to fetch content from a resource and map it to values by paths.
By default there are 6 provided readers:
  -XML files - XPATH mapped
  -XML Chunked for huge xml files - XPATH mapped
  -DomDocument XML/HTML - XPATH mapped
  -CSV fiels - Column name or index mapped
  -JSON files - Path to value mapped
  -SQL databases - Column name mapped


The Hash Manager
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Used to monitor imported items for update/delete.
This module provides only an SQL based Hash Manager.


The filter
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Used to filter values. This module provides a powerful filter class.


The processor
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The processor takes care of all import process.
This module provides just one processor compatibile with all readers.


Hooks
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There are two hooks you could implement:

hook_feed_import_error($error_type, $feed, $report)

$error_type - an integer indicationg error type.
Can be one of the following constant from FeedImport class:
FEED_OVERLAP_ERR - overlap error
FEED_ITEMS_ERR   - few items error
FEED_SOURCE_ERR  - source error
FEED_CONFIG_ERR  - configuration error

$feed - feed configuration
$report - report info

hook_feed_import_success($feed, $report)
$feed - feed configuration
$report - report info

These hooks will not be called if variable feed_import_invoke_hooks
is set to false.