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## org.opencyc.cycobject
Class CycAssertion

    java.lang.Object
      |
      +--org.opencyc.cycobject.CycObject
            |
            +--org.opencyc.cycobject.CycAssertion

public class CycAssertion
extends CycObject

Provides the behavior and attributes of OpenCyc assertions.

Assertions are communicated over the binary API using their Id number (an int). The associated formula, microtheory, truth-value, direction, and remaining attributes are is fetched later.

Author:
  Stephen L. Reed, Dan Lipofsky

  Copyright 2001 Cycorp, Inc., license is open source GNU LGPL.

  the license

  www.opencyc.org

  OpenCyc at SourceForge

  THIS SOFTWARE AND KNOWLEDGE BASE CONTENT ARE PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENCYC ORGANIZATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE AND KNOWLEDGE BASE CONTENT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Field Summary
`static java.lang.String` | `cycAssertionXMLTag` The name of the XML tag for this object.
`java.lang.Integer` | `id` Assertion id assigned by the local KB server.
`static java.lang.String` | `idXMLTag` The name of the XML tag for id objects
`static int` | `indentLength` The default indentation for printing objects to XML

Constructor Summary
`CycAssertion(java.lang.Integer id)` Constructs an incomplete `CycAssertion` object given its local KB id.

Method Summary
`java.lang.Object` | `cycListApiValue()` Returns this object in a form suitable for use as an `CycList` api expression value.
`boolean` | `equals(java.lang.Object object)` Indicates whether the object is equal to this object.
`CycList` | `getFormula()` Returns the formula for this assertion.
`java.lang.Integer` | `getId()` Returns the id for this assertion.
`java.lang.String` | `safeToString()` Returns a string representation without causing additional api calls.
`void` | `setFormula(CycList formula)` Sets the formula for this assertion.
`java.lang.String` | `stringApiValue()` Returns this object in a form suitable for use as an `String` api expression value.
`java.lang.String` | `toString()` Returns a `String` representation of the `CycAssertion`.
`void` | `toXML(XMLWriter xmlWriter, int indent, boolean relative)` Prints the XML representation of the CycAssertion to an `XMLWriter`
`java.lang.String` | `toXMLString()` Returns the XML representation of this object.

Methods inherited from class org.opencyc.cycobject.CycObject
`cyclify`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### cycAssertionXMLTag

    public static final java.lang.String cycAssertionXMLTag

  The name of the XML tag for this object.

### indentLength

    public static int indentLength

  The default indentation for printing objects to XML

### idXMLTag

    public static final java.lang.String idXMLTag

  The name of the XML tag for id objects

### id

    public java.lang.Integer id

  Assertion id assigned by the local KB server. Not globally unique.

Constructor Detail

### CycAssertion

    public CycAssertion(java.lang.Integer id)

  Constructs an incomplete `CycAssertion` object given its local KB id.
  Parameters:
    `id` - the assertion id assigned by the local KB

Method Detail

### equals

    public boolean equals(java.lang.Object object)

  Indicates whether the object is equal to this object.
  Overrides:
    `equals` in class `java.lang.Object`
  Returns:
    `true` if the object is equal to this object, otherwise returns `false`

### toString

    public java.lang.String toString()

  Returns a `String` representation of the `CycAssertion`.
  Overrides:
    `toString` in class `java.lang.Object`
  Returns:
    a `String` representation of the `CycAssertion`

### safeToString

    public java.lang.String safeToString()

  Returns a string representation without causing additional api calls.
  Returns:
    a string representation without causing additional api calls

### stringApiValue

    public java.lang.String stringApiValue()

  Returns this object in a form suitable for use as an `String` api expression value.
  Returns:
    this object in a form suitable for use as an `String` api expression value

### cycListApiValue

    public java.lang.Object cycListApiValue()

  Returns this object in a form suitable for use as an `CycList` api expression value.
  Returns:
    this object in a form suitable for use as an `CycList` api expression value

### getFormula

    public CycList getFormula()

  Returns the formula for this assertion.
  Returns:
    the formula for this assertion

### setFormula

    public void setFormula(CycList formula)

  Sets the formula for this assertion.
  Parameters:
    `formula` - the formula for this assertion

### getId

    public java.lang.Integer getId()

  Returns the id for this assertion.
  Returns:
    the id for this assertion

### toXMLString

    public java.lang.String toXMLString()
                                 throws java.io.IOException

  Returns the XML representation of this object.
  Returns:
    the XML representation of this object

### toXML

    public void toXML(XMLWriter xmlWriter,
                      int indent,
                      boolean relative)
               throws java.io.IOException

  Prints the XML representation of the CycAssertion to an `XMLWriter`
  Parameters:
    `xmlWriter` - an `XMLWriter`
    `indent` - an int that specifies by how many spaces to indent
    `relative` - a boolean; if true indentation is relative, otherwise absolute

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