class ArticleTopic(Base):
""" Represents an article having a topic, a 1:N relationship """
__tablename__ = "atopics"
article_id = Column(
psql_UUID(as_uuid=False),
ForeignKey("articles.id", onupdate="CASCADE", ondelete="CASCADE"),
nullable=False,
index=True,
)
topic_id = Column(
psql_UUID(as_uuid=False),
ForeignKey("topics.id", onupdate="CASCADE", ondelete="CASCADE"),
nullable=False,
index=True,
)
# The back-reference to the Article parent of this ArticleTopic
article = relationship("Article", backref=backref("atopics"))
# The back-reference to the Topic parent of this ArticleTopic
topic = relationship("Topic", backref=backref("atopics"))
__table_args__ = (
PrimaryKeyConstraint("article_id", "topic_id", name="atopics_pkey"),
)
def __repr__(self):
return "ArticleTopic()"
class Feedback(Base):
""" Represents a feedback form submission. """
__tablename__ = "feedback"
# UUID
id = Column(
psql_UUID(as_uuid=False),
index=True,
nullable=False,
unique=True,
primary_key=True,
server_default=text("uuid_generate_v1()"),
)
# Timestamp of feedback
timestamp = Column(DateTime, index=True, nullable=False)
# Topic (e.g. Embla/Netskrafl/etc.)
topic = Column(String, index=True, nullable=True)
# Name
name = Column(String, index=True, nullable=True)
# Email
email = Column(String, index=True, nullable=True)
# Comment
comment = Column(String, index=False, nullable=True)
def __repr__(self):
return "Feedback(name='{0}', email='{1}', topic='{2}', comment='{3}')".format(
self.name, self.email, self.topic, self.comment
)
class Topic(Base):
""" Represents a topic for an article """
__tablename__ = "topics"
id = Column(
psql_UUID(as_uuid=False),
server_default=text("uuid_generate_v1()"),
primary_key=True,
)
# The topic name
name = Column(String(128), nullable=False, index=True)
# An identifier for the topic, such as 'sport', 'business'...
# The identifier must be usable as a CSS class name.
identifier = Column(String(32), nullable=False)
# The topic keywords, in the form word1/cat word2/cat...
keywords = Column(String, nullable=False)
# The associated vector, in JSON format
vector = Column(String) # Is initally NULL
# The cosine distance threshold to apply for this topic
threshold = Column(Float)
def __repr__(self):
return "Topic(name='{0}')".format(self.name)
class Word(Base):
""" Represents a word occurring in an article """
__tablename__ = "words"
MAX_WORD_LEN = 64
# Foreign key to an article
article_id = Column(
psql_UUID(as_uuid=False),
ForeignKey("articles.id", onupdate="CASCADE", ondelete="CASCADE"),
nullable=False,
)
# The word stem
stem = Column(String(MAX_WORD_LEN), index=True, nullable=False)
# The word category
cat = Column(String(16), index=True, nullable=False)
# Count of occurrences
cnt = Column(Integer, nullable=False)
# The back-reference to the Article parent of this Word
article = relationship("Article", backref=backref("words"))
__table_args__ = (
PrimaryKeyConstraint("article_id", "stem", "cat", name="words_pkey"),
)
def __repr__(self):
return "Word(stem='{0}', cat='{1}', cnt='{2}')".format(
self.stem, self.cat, self.cnt
)
class Word(Base):
""" Represents a word occurring in an article """
__tablename__ = 'words'
# Foreign key to an article
article_id = Column(psql_UUID(as_uuid = False),
ForeignKey('articles.id', onupdate="CASCADE", ondelete="CASCADE"),
nullable = False)
# The word stem
stem = Column(String(64), index = True, nullable = False)
# The word category
cat = Column(String(16), index = True, nullable = False)
# Count of occurrences
cnt = Column(Integer, nullable = False)
# The back-reference to the Article parent of this Word
article = relationship("Article", backref=backref('words'))
__table_args__ = (
PrimaryKeyConstraint('article_id', 'stem', 'cat', name='words_pkey'),
)
def __repr__(self):
return "Word(stem='{0}', cat='{1}', cnt='{2}')" \
.format(self.stem, self.cat, self.cnt)
@classmethod
def table(cls):
return cls.__table__
class Location(Base):
""" Represents a location """
__tablename__ = "locations"
# UUID
id = Column(
psql_UUID(as_uuid=False),
index=True,
nullable=False,
unique=True,
primary_key=True,
server_default=text("uuid_generate_v1()"),
)
# Foreign key to an article
article_url = Column(
String,
# We don't delete associated location if the article is deleted
ForeignKey("articles.url", onupdate="CASCADE", ondelete="SET NULL"),
index=True,
nullable=True,
)
# Name
name = Column(String, index=True)
# Kind (e.g. 'address', 'street', 'country', 'region', 'placename')
kind = Column(String(16), index=True)
# Country (ISO 3166-1 alpha-2, e.g. 'IS')
country = Column(String(2))
# Continent ISO code (e.g. 'EU')
continent = Column(String(2))
# Coordinates (WGS84)
latitude = Column(Float)
longitude = Column(Float)
# Additional data
data = Column(JSONB)
# Timestamp of this entry
timestamp = Column(DateTime)
# The back-reference to the Article parent of this Location
article = relationship("Article",
backref=backref("locations", order_by=name))
__table_args__ = (UniqueConstraint("name", "kind", "article_url"), )
def __repr__(self):
return "Location(id='{0}', name='{1}', kind='{2}', country='{3}')".format(
self.id, self.name, self.kind, self.country)
@classmethod
def table(cls):
return cls.__table__
class QueryLog(Base):
""" Represents a fully anonymized, logged query and its answer. """
__tablename__ = "querylog"
# UUID
id = Column(
psql_UUID(as_uuid=False),
index=True,
nullable=False,
unique=True,
primary_key=True,
server_default=text("uuid_generate_v1()"),
)
# See the Query class for documentation of these fields
timestamp = Column(DateTime, index=True, nullable=False)
interpretations = Column(JSONB, nullable=True)
question = Column(String, index=True, nullable=False)
bquestion = Column(String, index=False, nullable=True)
answer = Column(String, index=False, nullable=True)
voice = Column(String, index=False, nullable=True)
qtype = Column(String(80), index=True, nullable=True)
key = Column(String(256), index=True, nullable=True)
error = Column(String(256), nullable=True)
@staticmethod
def from_Query(q: Query):
""" Create QueryLog object from Query object. """
return QueryLog(
timestamp=q.timestamp,
interpretations=q.interpretations,
question=q.question,
bquestion=q.bquestion,
answer=q.answer,
voice=q.voice,
qtype=q.qtype,
key=q.key,
error=q.error,
)
def __repr__(self):
return "QueryLog(question='{0}', answer='{1}')".format(
self.question, self.answer
)
class Correction(Base):
""" Represents correction feedback """
__tablename__ = "corrections"
# Primary key (UUID)
id = Column(
psql_UUID(as_uuid=False),
server_default=text("uuid_generate_v1()"),
primary_key=True
)
# Timestamp of this entry
timestamp = cast(datetime, Column(DateTime, nullable=False, index=True))
# The original sentence being annotated
sentence = cast(str, Column(String, nullable=False))
# Annotation code
code = cast(str, Column(String(32), nullable=False, index=True))
# Annotation text
annotation = cast(str, Column(String, nullable=False))
# Annotation span
start = cast(int, Column(Integer, nullable=False))
end = cast(int, Column(Integer, nullable=False))
# Correction
correction = cast(str, Column(String, nullable=False))
# User feedback
feedback = cast(str, Column(String(32), nullable=False, index=True))
# Reason text
reason = cast(str, Column(String(32), index=True))
def __repr__(self) -> str:
return "Correction(id='{0}', sent='{1}', code='{2}', annotation='{3}', feedback='{4}')".format(
self.id, self.sentence, self.code, self.annotation, self.feedback
)
class Query(Base):
""" Represents a logged incoming query with its answer """
__tablename__ = "queries"
# UUID
id = Column(
psql_UUID(as_uuid=False),
index=True,
nullable=False,
unique=True,
primary_key=True,
server_default=text("uuid_generate_v1()"),
)
# Timestamp of the incoming query
timestamp = Column(DateTime, index=True, nullable=False)
# Interpretations
# JSON array containing list of possible interpretations
# provided by a speech-to-text engine.
interpretations = Column(JSONB, nullable=True)
# Question
question = Column(String, index=True, nullable=False)
@hybrid_property
def question_lc(self):
return self.question.lower()
# pylint: disable=no-self-argument
@question_lc.comparator # type: ignore
def question_lc(cls):
return CaseInsensitiveComparator(cls.question)
# Beautified question
bquestion = Column(String, index=False, nullable=True)
# Answer
answer = Column(String, index=False, nullable=True)
@hybrid_property
def answer_lc(self):
return self.answer.lower()
# pylint: disable=no-self-argument
@answer_lc.comparator # type: ignore
def answer_lc(cls):
return CaseInsensitiveComparator(cls.answer)
# Voice answer
voice = Column(String, index=False, nullable=True)
@hybrid_property
def voice_lc(self):
return self.voice.lower()
# pylint: disable=no-self-argument
@voice_lc.comparator # type: ignore
def voice_lc(cls):
return CaseInsensitiveComparator(cls.voice)
# Error code
error = Column(String(256), nullable=True)
# When does this answer expire, for caching purposes?
# NULL=immediately
expires = Column(DateTime, index=True, nullable=True)
# The query type, NULL if not able to process
qtype = Column(String(80), index=True, nullable=True)
# The query key, NULL if not able to process or not applicable
key = Column(String(256), index=True, nullable=True)
# Client type
# Either "www" (web interface), "ios" (iOS) or "android" (Android)
client_type = Column(String(80), index=True, nullable=True)
# Client version
client_version = Column(String(10), nullable=True)
# Client identifier, if applicable
# If web client, this is the HTTP client user agent
# On iOS and Android, this is a unique device UUID string
client_id = Column(String(256), index=True, nullable=True)
# Client location coordinates (WGS84)
latitude = Column(Float, nullable=True)
longitude = Column(Float, nullable=True)
# Client IP address
remote_addr = Column(INET, nullable=True)
# Additional context used to answer the query
context = Column(JSONB, nullable=True)
# Add an index on the question in lower case
question_lc_index = Index("ix_queries_question_lc", func.lower(question))
# !!! The following indices don't work since answers can become
# !!! very long (thousands of characters) and PostgreSQL has a
# !!! limit on index entry size vs. its page size.
# Add an index on the answer in lower case
# answer_lc_index = Index('ix_queries_answer_lc', func.lower(answer))
# Add an index on the voice answer in lower case
# voice_lc_index = Index('ix_queries_voice_lc', func.lower(voice))
def __repr__(self):
return "Query(question='{0}', answer='{1}')".format(self.question, self.answer)
class Article(Base):
""" Represents an article from one of the roots, to be scraped
or having already been scraped """
__tablename__ = "articles"
# The article URL is the primary key
url = Column(String, primary_key=True)
# UUID
id = Column(
psql_UUID(as_uuid=False),
index=True,
nullable=False,
unique=True,
server_default=text("uuid_generate_v1()"),
)
# Foreign key to a root
root_id = Column(
Integer,
# We don't delete associated articles if the root is deleted
ForeignKey("roots.id", onupdate="CASCADE", ondelete="SET NULL"),
)
# Article heading, if known
heading = Column(String)
# Article author, if known
author = Column(String)
# Article time stamp, if known
timestamp = Column(DateTime, index=True)
# Authority of this article, 1.0 = most authoritative, 0.0 = least authoritative
authority = Column(Float)
# Time of the last scrape of this article
scraped = Column(DateTime, index=True)
# Time of the last parse of this article
parsed = Column(DateTime, index=True)
# Time of the last processing of this article
processed = Column(DateTime, index=True)
# Time of the last indexing of this article
indexed = Column(DateTime, index=True)
# Module used for scraping
scr_module = Column(String(80))
# Class within module used for scraping
scr_class = Column(String(80))
# Version of scraper class
scr_version = Column(String(16))
# Version of parser/grammar/config
parser_version = Column(String(64))
# Parse statistics
num_sentences = Column(Integer)
num_parsed = Column(Integer)
ambiguity = Column(Float)
# The HTML obtained in the last scrape
html = Column(String)
# The parse tree obtained in the last parse
tree = Column(String)
# The tokens of the article in JSON string format
tokens = Column(String)
# The article topic vector as an array of floats in JSON string format
topic_vector = Column(String)
# The back-reference to the Root parent of this Article
root = relationship(
"Root",
foreign_keys="Article.root_id",
backref=backref("articles", order_by=url),
)
def __repr__(self):
return "Article(url='{0}', heading='{1}', scraped={2})".format(
self.url, self.heading, self.scraped
)