260 lines
8.9 KiB
Python
260 lines
8.9 KiB
Python
#
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# Copyright (c) 2010 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Report management.
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$Id$
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"""
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from zope.interface import Interface, Attribute
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from zope.i18nmessageid import MessageFactory
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from zope import schema
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from zope.schema.vocabulary import SimpleVocabulary, SimpleTerm
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from cybertools.composer.interfaces import ITemplate, IComponent, ICompound
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from cybertools.composer.interfaces import IInstance
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_ = MessageFactory('cybertools.composer')
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class IReportManager(Interface):
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""" A manager (or container) for reports.
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"""
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title = schema.TextLine(
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title=_(u'Title'),
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description=_(u'The title of the object.'),
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required=True,)
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reports = Attribute('A collection of message objects managed.')
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def addReport(report):
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""" Add a report.
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"""
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def getReport(id):
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""" Retrieve a report.
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"""
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class IReportParams(Interface):
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""" Contains the real reporting parameters like query and sort criteria,
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column definitions, etc.
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"""
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queryCriteria = Attribute('The criteria to be used for executing the '
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'query step.')
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sortSpec = Attribute('A sequence of fields/sort directions to be used for '
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'executing the sorting step.')
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outputSpec = Attribute('A sequence of output fields (column/cell '
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'specifications) to be used for presenting the result data.')
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class IReport(ITemplate, IReportParams):
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""" A configurable report.
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"""
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identifier = schema.ASCIILine(
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title=_(u'Identifier'),
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description=_(u'The (internal) identifier of the report.'),
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required=True,)
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name = schema.ASCIILine(
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title=_(u'Name'),
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description=_(u'The (visible) name of the report.'),
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required=True,)
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title = schema.TextLine(
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title=_(u'Title'),
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description=_(u'The title or label of the report.'),
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required=True,)
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description = schema.Text(
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title=_(u'Description'),
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description=_(u'A brief description of the report.'),
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required=False,)
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owner = schema.ASCIILine(
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title=_(u'Owner'),
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description=_(u'The user ID of the owner of the report.'),
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required=True,)
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public = schema.Bool(
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title=_(u'Public'),
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description=_(u'Check this field to make the report available '
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u'to others.'),
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required=False,)
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manager = Attribute('The manager of this message object')
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fields = Attribute('An ordered collection of all field definitions '
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'available for this report type.')
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renderers = Attribute('An ordered collection of renderers available '
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'for this report type.')
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def getQueryFields():
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""" Return a sequence of fields that may be used for setting up
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the query criteria.
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"""
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def getSortFields():
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""" Return a sequence of fields that may be used for setting up
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the sort criteria.
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"""
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def getOutputFields():
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""" Return a sequence of fields that may be used for setting up
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the output specification.
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"""
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class FieldType(SimpleTerm):
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instanceName = ''
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def __init__(self, value, token=None, title=None, **kw):
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super(FieldType, self).__init__(value, token, title)
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self.name = value
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for k, v in kw.items():
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setattr(self, k, v)
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fieldTypes = SimpleVocabulary((
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FieldType('textline', 'textline', u'Textline'),
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FieldType('number', 'number', u'Number', instanceName='number'),
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FieldType('date', 'date', u'Date', instanceName='date'),
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))
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class IField(IComponent):
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""" Describes a field that may be used in query criteria, for specifying
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columns or cells for display, or for sorting.
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"""
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name = schema.ASCII(
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title=_(u'Field Name'),
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description=_(u'The internal name of the field.'),
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required=True,)
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title = schema.TextLine(
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title=_(u'Title'),
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description=_(u'The visible title or label of the field.'),
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required=True,)
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description = schema.Text(
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title=_(u'Description'),
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description=_(u'A brief description of the field.'),
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required=False,)
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fieldType = schema.Choice(
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title=_(u'Field Type'),
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description=_(u'The type of the field.'),
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required=True,
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default='textline',
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vocabulary=fieldTypes,)
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executionSteps = schema.List(
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title=_(u'Execution Steps'),
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description=_(u'The execution steps for which this field may '
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u'be used.'),
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required=True,
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default=['query', 'sort', 'output'],)
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class IBaseReportComponent(IComponent):
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name = schema.ASCII(
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title=_(u'Field Name'),
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description=_(u'The internal name of the field.'),
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required=True,)
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title = schema.TextLine(
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title=_(u'Title'),
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description=_(u'The visible title of the field.'),
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required=True,)
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baseName = schema.ASCII(
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title=_(u'Base Field Name'),
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description=_(u'The name of the predefined field specification '
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u'this field is based on.'),
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required=True,)
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expression = schema.ASCII(
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title=_(u'Expression'),
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description=_(u'Optional: an expression to be applied to '
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u'the field\'s value before using it in the '
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u'corresponding execution step.'),
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required=False,)
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class IQueryCriteria(Interface):
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def check(obj):
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""" Return True if the object given meets the query conditions
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specified by this criteria object.
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"""
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class ILeafQueryCriteria(IQueryCriteria, IBaseReportComponent):
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""" A terminal query criteria element.
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"""
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operator = schema.Choice(
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title=_(u'Operator'),
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description=_(u'Operator to be used for comparison.'),
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required=True,
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default='in',
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values=('=', '<', '<=', '>', '>=', '!=', 'in'),)
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comparisonValue = schema.Object(
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title=_(u'Comparison Value'),
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description=_(u'The value to be used for comparison.'),
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schema=Interface,
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required=True,)
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class ICompoundQueryCriteria(IQueryCriteria, IBaseReportComponent, ICompound):
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""" A query criteria element consisting of leaf query criteria elements.
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The names of the component criteria are given by the ``parts``
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attribute.
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"""
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logicalOperator = schema.Choice(
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title=_(u'Operator'),
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description=_(u'Logical operator for connecting the sub-criteria.'),
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required=True,
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default='and',
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values=('and', 'or'),)
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class ISortField(IBaseReportComponent):
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""" Specification for a field to be used for sorting.""
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"""
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direction = schema.Choice(
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title=_(u'Sort Direction'),
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description=_(u'Sort direction: Ascending or descending.'),
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required=True,
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default='ascending',
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values=('ascending', 'descending'),)
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class IOutputField(IBaseReportComponent):
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""" Specification for a field to be used as a table column or cell.""
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"""
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label = schema.TextLine(
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title=_(u'Lable'),
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description=_(u'The label to be used when displaying the field.'),
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required=True,)
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format = schema.ASCII(
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title=_(u'Format'),
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description=_(u'A format string for displaying the field.'),
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required=False,)
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instanceName = schema.ASCII(
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title=_(u'Instance Name'),
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description=_(u'The name referencing a field instance class '
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u'to be used for processing the field\'s value.'),
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required=False,)
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