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deb-python-oauth2client/docs/epy/oauth2client.appengine.FlowProperty-class.html
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<a href="oauth2client-module.html">Package&nbsp;oauth2client</a> ::
<a href="oauth2client.appengine-module.html">Module&nbsp;appengine</a> ::
Class&nbsp;FlowProperty
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class FlowProperty</h1><p class="nomargin-top"><span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty">source&nbsp;code</a></span></p>
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<pre class="literalblock">
App Engine datastore Property for Flow.
Utility property that allows easy storage and retreival of an
oauth2client.Flow
</pre>
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<span class="summary-type">&nbsp;</span>
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<td><span class="summary-sig"><a href="oauth2client.appengine.FlowProperty-class.html#get_value_for_datastore" class="summary-sig-name">get_value_for_datastore</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">model_instance</span>)</span><br />
Datastore representation of this property.</td>
<td align="right" valign="top">
<span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.get_value_for_datastore">source&nbsp;code</a></span>
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<span class="summary-type">&nbsp;</span>
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<td><span class="summary-sig"><a href="oauth2client.appengine.FlowProperty-class.html#make_value_from_datastore" class="summary-sig-name">make_value_from_datastore</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">value</span>)</span><br />
Native representation of this property.</td>
<td align="right" valign="top">
<span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.make_value_from_datastore">source&nbsp;code</a></span>
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<td><span class="summary-sig"><a href="oauth2client.appengine.FlowProperty-class.html#validate" class="summary-sig-name">validate</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">value</span>)</span><br />
Assert that provided value is compatible with this property.</td>
<td align="right" valign="top">
<span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.validate">source&nbsp;code</a></span>
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<span class="summary-type">&nbsp;</span>
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<td><span class="summary-sig"><a href="oauth2client.appengine.FlowProperty-class.html#empty" class="summary-sig-name">empty</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">value</span>)</span><br />
Determine if value is empty in the context of this property.</td>
<td align="right" valign="top">
<span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.empty">source&nbsp;code</a></span>
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<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code>google.appengine.ext.db.Property</code></b>:
<code>__get__</code>,
<code>__init__</code>,
<code>__property_config__</code>,
<code>__set__</code>,
<code>datastore_type</code>,
<code>default_value</code>,
<code>get_updated_value_for_datastore</code>
</p>
<div class="private"> <p class="indent-wrapped-lines"><b>Inherited from <code>google.appengine.ext.db.Property</code></b> (private):
<code>_attr_name</code>,
<code>_require_parameter</code>
</p></div>
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__format__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__new__</code>,
<code>__reduce__</code>,
<code>__reduce_ex__</code>,
<code>__repr__</code>,
<code>__setattr__</code>,
<code>__sizeof__</code>,
<code>__str__</code>,
<code>__subclasshook__</code>
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<span class="summary-type">&nbsp;</span>
</td><td class="summary">
<a name="data_type"></a><span class="summary-name">data_type</span> = <code title="Flow">Flow</code><br />
str(object) -&gt; string
</td>
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<p class="indent-wrapped-lines"><b>Inherited from <code>google.appengine.ext.db.Property</code></b>:
<code>creation_counter</code>
</p>
</td>
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<!-- ==================== PROPERTIES ==================== -->
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
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<a name="get_value_for_datastore"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">get_value_for_datastore</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">model_instance</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.get_value_for_datastore">source&nbsp;code</a></span>&nbsp;
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<pre class="literalblock">
Datastore representation of this property.
Looks for this property in the given model instance, and returns the proper
datastore representation of the value that can be stored in a datastore
entity. Most critically, it will fetch the datastore key value for
reference properties.
Some properies (e.g. DateTimeProperty, UserProperty) optionally update their
value on every put(). This call must return the current value for such
properties (get_updated_value_for_datastore returns the new value).
Args:
model_instance: Instance to fetch datastore value from.
Returns:
Datastore representation of the model value in a form that is
appropriate for storing in the datastore.
</pre>
<dl class="fields">
<dt>Overrides:
google.appengine.ext.db.Property.get_value_for_datastore
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
<a name="make_value_from_datastore"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<h3 class="epydoc"><span class="sig"><span class="sig-name">make_value_from_datastore</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">value</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.make_value_from_datastore">source&nbsp;code</a></span>&nbsp;
</td>
</tr></table>
<pre class="literalblock">
Native representation of this property.
Given a value retrieved from a datastore entity, return a value,
possibly converted, to be stored on the model instance. Usually
this returns the value unchanged, but a property class may
override this when it uses a different datatype on the model
instance than on the entity.
This API is not quite symmetric with get_value_for_datastore(),
because the model instance on which to store the converted value
may not exist yet -- we may be collecting values to be passed to a
model constructor.
Args:
value: value retrieved from the datastore entity.
Returns:
The value converted for use as a model instance attribute.
</pre>
<dl class="fields">
<dt>Overrides:
google.appengine.ext.db.Property.make_value_from_datastore
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
<a name="validate"></a>
<div>
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cellspacing="0" width="100%" bgcolor="white">
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<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">validate</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">value</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.validate">source&nbsp;code</a></span>&nbsp;
</td>
</tr></table>
<pre class="literalblock">
Assert that provided value is compatible with this property.
Args:
value: Value to validate against this Property.
Returns:
A valid value, either the input unchanged or adapted to the
required type.
Raises:
BadValueError if the value is not appropriate for this
property in any way.
</pre>
<dl class="fields">
<dt>Overrides:
google.appengine.ext.db.Property.validate
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
<a name="empty"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">empty</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">value</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="oauth2client.appengine-pysrc.html#FlowProperty.empty">source&nbsp;code</a></span>&nbsp;
</td>
</tr></table>
<pre class="literalblock">
Determine if value is empty in the context of this property.
For most kinds, this is equivalent to &quot;not value&quot;, but for kinds like
bool, the test is more subtle, so subclasses can override this method
if necessary.
Args:
value: Value to validate against this Property.
Returns:
True if this value is considered empty in the context of this Property
type, otherwise False.
</pre>
<dl class="fields">
<dt>Overrides:
google.appengine.ext.db.Property.empty
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
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