models.py 3.96 KB
# -*- coding: utf-8 -*-

from django.db.models import AutoField, BooleanField, CharField, \
                             FloatField, ForeignKey,  Model, OneToOneField, \
                             PositiveIntegerField, TextField, URLField
from django.db.models.fields.related import ManyToManyField

from common import constants


class Entry(Model):
    name = TextField(db_index=True)
    domains = ManyToManyField('Domain', related_name='entries')
    meanings = ManyToManyField('Meaning', related_name='entries')
    sources = ManyToManyField('Source', related_name='entries')

    def __unicode__(self):
        return self.name


class Meaning(Model):
    id = AutoField(primary_key=True)
    plWN_synset = PositiveIntegerField(blank=True, null=True)
    wikilink = URLField(max_length=400, blank=True, null=True)
    description = TextField(blank=True, null=True)
    comment = TextField(blank=True, null=True)
    status = ForeignKey('MeaningStatus', related_name='meanings',
                        blank=True, null=True)
    domains = ManyToManyField('Domain', related_name='meanings')

    def add_domains(self, dom_names):
        for name in dom_names:
            domain_obj, _ = Domain.objects.get_or_create(name=name)
            self.domains.add(domain_obj)

    def __unicode__(self):
        return ' = '.join([expr.text for expr in self.expressions.all()]) + ' !! %s' % self.comment


class MeaningStatus(Model):
    hidden = BooleanField(default=False)
    key = CharField(max_length=16, primary_key=True)
    name = CharField(max_length=32)
    display_color = CharField(max_length=16)

    def __unicode__(self):
        return self.name


def get_or_create_meaning(plWN_synset, wikilink):
    created = False
    meaning = None
    if plWN_synset:
        try:
            meaning = Meaning.objects.get(plWN_synset=plWN_synset)
        except Meaning.DoesNotExist:
            pass
    if wikilink and meaning == None:
        try:
            meaning = Meaning.objects.get(wikilink=wikilink)
        except Meaning.DoesNotExist:
            pass
    if meaning == None:
        meaning = Meaning.objects.create(plWN_synset=plWN_synset, wikilink=wikilink)
        created = True
    return meaning, created

    
class Expression(Model):
    id = AutoField(primary_key=True)
    text = TextField()
    base_text = TextField()
    orth_text = TextField()
    meaning = ForeignKey('Meaning', related_name='expressions')
    score = FloatField()
    NKJP_freq = PositiveIntegerField()
    is_catchword = BooleanField(default=False)

    def __unicode__(self):
        return self.text


class SourceLink(Model):
    expression = OneToOneField('Expression', related_name='link')
    source = ForeignKey('Source', related_name='links')
    exact_link = URLField(max_length=400, blank=True, null=True)


class Source(Model):
    key = CharField(max_length=16, primary_key=True)
    name = CharField(max_length=32)
    description = TextField(blank=True, null=True)
    url = URLField(blank=True, null=True)
    protected = BooleanField(default=True)

    class Meta:
        ordering = ['name']

    def __unicode__(self):
        return self.name


class Segment(Model):
    position_in_expr = PositiveIntegerField()
    expression = ForeignKey('Expression', related_name='segments')
    orth = CharField(max_length=64)
    base = CharField(max_length=64)
    ctag = CharField(max_length=8)
    msd = CharField(max_length=64)
    is_head = BooleanField(default=False)
    has_nps = BooleanField(default=False)

    def is_verb(self):
        if self.ctag in constants.VERB_TAGS:
            return True
        return False

    def is_noun(self):
        if self.ctag in constants.NOUN_TAGS:
            return True
        return False

    def __unicode__(self):
        return self.orth


class Domain(Model):
    id = AutoField(primary_key=True)
    name = CharField(max_length=128)
    description = TextField(blank=True, null=True)

    class Meta:
        ordering = ['name']

    def __unicode__(self):
        return self.name