solrpy pagnator batch

i use solr1.4.1 version,and the return xml is changed,
the original return xml is like this


0
12

test
...

...



document_id
some test text
...





2
...






some test text
...


...



in responseHeader node has params sub node,but the new version(1.4.1),cancle it,so we need hack some code to fix this isuue.

so when use the default paginator has one issue,
when i invoke it will thrown errors as follows:



class SolrPaginator:

"""

Create a Django-like Paginator for a solr response object. Can be handy

when you want to hand off a Paginator and/or Page to a template to

display results, and provide links to next page, etc.



For example:

>>> from solr import SolrConnection, SolrPaginator

>>>

>>> conn = SolrConnection('http://localhost:8083/solr')

>>> response = conn.query('title:huckleberry')

>>> paginator = SolrPaginator(response)

>>> print paginator.num_pages

>>> page = paginator.get_page(5)



For more details see the Django Paginator documentation and solrpy

unittests.



http://docs.djangoproject.com/en/dev/topics/pagination/



"""



def __init__(self, result, default_page_size='10'):

self.params = {"rows":default_page_size}

# lexus modified at 201007

#self.params = result.header['params']

self.result = result

self.conn = result._connection



if 'rows' in self.params:

self.page_size = int(self.params['rows'])

elif default_page_size:

try:

self.page_size = int(default_page_size)

except ValueError:

raise ValueError('default_page_size must be an integer')



if self.page_size < len(self.result.results):

raise ValueError('Invalid default_page_size specified, lower '

'than number of results')



else:

self.page_size = len(self.result.results)

....



实际调用的例子
#!/usr/bin/env python
#encoding=utf8

import solr

# create a connection to a solr server
s = solr.SolrConnection('http://localhost:8080/solr/core0')

# add a document to the index
#s.add(id=1, title='Lucene in Action', author=['Erik Hatcher', 'Otis Gospodnetić'])
#s.commit()

# do a search
response = s.query('正品')
for hit in response.results:
print hit['name'].encode("utf8")
print hit['price']

response = s.query('*', facet='true', facet_field='site')
for hit in response.results:
print hit["name"].encode("utf8")
if "brand" in hit:
print hit["brand"]
else:
print "no brand"

response = s.query('*')
paginator = solr.SolrPaginator(response,default_page_size='1')
print type(paginator)
print paginator.num_pages