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Projection (Google App Engine API for Java)
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- java.lang.Object
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- com.google.appengine.api.datastore.Projection
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Method Summary
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Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-06-16 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-16 UTC."],[[["\u003cp\u003e\u003ccode\u003eProjection\u003c/code\u003e is an abstract class in the \u003ccode\u003ecom.google.appengine.api.datastore\u003c/code\u003e package, used for query projections.\u003c/p\u003e\n"],["\u003cp\u003eIt implements the \u003ccode\u003eSerializable\u003c/code\u003e interface and extends \u003ccode\u003ejava.lang.Object\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003ePropertyProjection\u003c/code\u003e is a direct subclass of the \u003ccode\u003eProjection\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003egetName()\u003c/code\u003e method, which returns the property name populated by the projection, is the only abstract method within this class.\u003c/p\u003e\n"]]],[],null,["# Projection (Google App Engine API for Java)\n\ncom.google.appengine.api.datastore\n\nClass Projection\n----------------\n\n- java.lang.Object\n-\n - com.google.appengine.api.datastore.Projection\n\n-\n\n All Implemented Interfaces:\n : java.io.Serializable\n\n Direct Known Subclasses:\n : [PropertyProjection](../../../../../com/google/appengine/api/datastore/PropertyProjection.html \"class in com.google.appengine.api.datastore\")\n\n *** ** * ** ***\n\n \u003cbr /\u003e\n\n ```\n public abstract class Projection\n extends java.lang.Object\n implements java.io.Serializable\n ``` \n A query projection.\n\n See Also:\n : [`Query.getProjections()`](../../../../../com/google/appengine/api/datastore/Query.html#getProjections--),\n[Serialized Form](../../../../../serialized-form.html#com.google.appengine.api.datastore.Projection) \n-\n -\n\n ### Method Summary\n\n -\n\n ### Methods inherited from class java.lang.Object\n\n`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait` \n-\n -\n\n ### Method Detail\n\n\n -\n\n #### getName\n\n ```\n public abstract java.lang.String getName()\n ``` \n Returns the name of the property this projection populates."]]
