com.esri.arcgis.geodatabase
Interface INetworkFieldEvaluator

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

INetworkFieldEvaluatorProxy, NetworkFieldEvaluator

public interface INetworkFieldEvaluator

extends java.io.Serializable

Provides access to members that specify the properties of a network attribute evaluator whose values are derived from object field attributes.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Remarks

The INetworkFieldEvaluator interface accesses the code used by a NetworkFieldEvaluator object for calculating the attribute value for a network element. Any setup computations needed prior to calculate the attribute value are specified in the preLogic parameter. The value of the attribute is computed from the expression.

The example below shows the preLogic and expression for determining the direction of travel based on a string field named One_way:

• PreLogic:

	restricted = False
        Select Case UCase([One_way])
          Case "N", "TF", "T": restricted = True
        End Select

• Expression:

	restricted

Method Summary

void	getExpression(java.lang.String[] expression, java.lang.String[] preLogic) Gets the VBScript calculator expression and pre-logic used to derive the values for this network evaluator.
void	setExpression(java.lang.String expression, java.lang.String preLogic) Sets the VBScript calculator expression and pre-logic used to derive the values for this network evaluator.

Method Detail

setExpression

public void setExpression(java.lang.String expression,
                          java.lang.String preLogic)
                   throws java.io.IOException,
                          AutomationException

Sets the VBScript calculator expression and pre-logic used to derive the values for this network evaluator.

Parameters:

expression - The expression (in)

preLogic - The preLogic (in)

Throws:

java.io.IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getExpression

public void getExpression(java.lang.String[] expression,
                          java.lang.String[] preLogic)
                   throws java.io.IOException,
                          AutomationException

Gets the VBScript calculator expression and pre-logic used to derive the values for this network evaluator.

Remarks

When examining the preLogic parameter for code with multiple lines, the CarriageReturn-LineFeed character is at the line breaks.

Parameters:

expression - The expression (in/out: use single element array)

preLogic - The preLogic (in/out: use single element array)

Throws:

java.io.IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.