org.aksw.sparqlify.database.VariableConstraint Maven / Gradle / Ivy
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package org.aksw.sparqlify.database;
/**
* Constraint for a variable.
*
* FIXME Might make sense to make the variable type a generic,
* so we can use String or Var as we see fit.
*
* @author Claus Stadler
*
*/
public class VariableConstraint
{
private String variableName;
private Constraint constraint;
public VariableConstraint(String variableName, Constraint constraint) {
this.variableName = variableName;
this.constraint = constraint;
}
public String getVariableName() {
return variableName;
}
public Constraint getConstraint() {
return constraint;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((constraint == null) ? 0 : constraint.hashCode());
result = prime * result
+ ((variableName == null) ? 0 : variableName.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
VariableConstraint other = (VariableConstraint) obj;
if (constraint == null) {
if (other.constraint != null)
return false;
} else if (!constraint.equals(other.constraint))
return false;
if (variableName == null) {
if (other.variableName != null)
return false;
} else if (!variableName.equals(other.variableName))
return false;
return true;
}
@Override
public String toString() {
return variableName + " -> " + constraint;
}
}