__init__.py
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# coding=utf-8
#author: 4N
#createtime: 2021/6/11
#email: nheweijun@sina.com
from sqlalchemy import Column, Integer, String, ForeignKey, Text, DateTime, Time,Binary,Float
from app.models import db
class Image(db.Model):
'''
影像元数据
'''
__tablename__ = 'dmdms_image'
guid = Column(String(256), primary_key=True)
name = Column(String)
alias = Column(String)
raster_y_size = Column(Integer)
raster_x_size = Column(Integer)
overview_count = Column(Integer)
origin_extent = Column(String)
geo_origin_extent = Column(String)
null_value = Column(Integer)
available = Column(Integer)#影像是否可用，不可用可能在创建金字塔中
band_count = Column(Integer)
path = Column(String)
server = Column(String)
# host=Column(String)
# port=Column(Integer)
size = Column(Float)
#坐标wkt
sr_wkt = Column(Text)
sr_proj4 = Column(Text)
epsg = Column(Integer)
create_time = Column(DateTime)
update_time = Column(DateTime)
cell_x_size = Column(Float)
cell_y_size = Column(Float)
region = Column(Text)
#年份
ym = Column(String(256))
dmdms_image_rel = db.Table('dmdms_image_rel',
Column('image_guid',String, ForeignKey('dmdms_image.guid')),
Column('service_guid', String, ForeignKey('dmdms_image_service.guid'))
)
class ImageService(db.Model):
'''
影像服务
'''
__tablename__ = 'dmdms_image_service'
guid = Column(String(256), primary_key=True)
name=Column(String(256))
alias = Column(String(256))
state= Column(Integer)
create_time = Column(DateTime)
update_time = Column(DateTime)
description = Column(Text)
slice_scheme = Column(Text)
extent = Column(String(256))
node = Column(Integer)
#可视范围geojson
visual_range = Column(Text)
#影像服务缩略图
overview = Column(Binary)
images = db.relationship('Image',
secondary=dmdms_image_rel,
backref='image_services',
lazy='dynamic'
)
dmdms_image_tag_rel = db.Table('dmdms_image_tag_rel',
Column('image_guid',String, ForeignKey('dmdms_image.guid')),
Column('tag_guid', String, ForeignKey('dmdms_image_tag.guid'))
)
class ImageTag(db.Model):
'''
影像标签
'''
__tablename__ = 'dmdms_image_tag'
guid = Column(String(256), primary_key=True)
name=Column(String(256))
alias = Column(String(256))
images = db.relationship('Image',
secondary=dmdms_image_tag_rel,
backref='image_tags',
lazy='dynamic'
)