@Override
public void init(Instances structure, Environment env) {
super.init(structure, env);
for (ExpressionNode n : m_children) {
n.init(structure, env);
}
}
/**
* Initialize with respect to the incoming instance format
*
* @param data the incoming instance format
*/
protected void init(Instances data) {
m_indexOfTrueStep = -1;
m_indexOfFalseStep = -1;
m_connectedFormat = data;
if (m_downstream == null) {
return;
}
if (m_downstream[0] != null
&& ((BeanCommon) m_downstream[0]).getCustomName().equals(m_customNameOfTrueStep)) {
m_indexOfTrueStep = 0;
}
if (m_downstream[0] != null
&& ((BeanCommon) m_downstream[0]).getCustomName().equals(m_customNameOfFalseStep)) {
m_indexOfFalseStep = 0;
}
if (m_downstream[1] != null
&& ((BeanCommon) m_downstream[1]).getCustomName().equals(m_customNameOfTrueStep)) {
m_indexOfTrueStep = 1;
}
if (m_downstream[1] != null
&& ((BeanCommon) m_downstream[1]).getCustomName().equals(m_customNameOfFalseStep)) {
m_indexOfFalseStep = 1;
}
if (m_env == null) {
m_env = Environment.getSystemWide();
}
try {
if (m_expressionString != null && m_expressionString.length() > 0) {
m_root = new BracketNode();
m_root.parseFromInternal(m_expressionString);
}
if (m_root != null) {
m_root.init(data, m_env);
}
} catch (Exception ex) {
ex.printStackTrace();
stop();
m_busy = false;
}
}
@Override
public void init(Instances structure, Environment env) {
super.init(structure, env);
m_resolvedLhsName = m_lhsAttributeName;
m_resolvedRhsOperand = m_rhsOperand;
try {
m_resolvedLhsName = m_env.substitute(m_resolvedLhsName);
m_resolvedRhsOperand = m_env.substitute(m_resolvedRhsOperand);
} catch (Exception ex) {
}
Attribute lhs = null;
// try as an index or "special" label first
if (m_resolvedLhsName.toLowerCase().startsWith("/first")) {
lhs = structure.attribute(0);
} else if (m_resolvedLhsName.toLowerCase().startsWith("/last")) {
lhs = structure.attribute(structure.numAttributes() - 1);
} else {
// try as an index
try {
int indx = Integer.parseInt(m_resolvedLhsName);
indx--;
lhs = structure.attribute(indx);
} catch (NumberFormatException ex) {
}
}
if (lhs == null) {
lhs = structure.attribute(m_resolvedLhsName);
}
if (lhs == null) {
throw new IllegalArgumentException(
"Data does not contain attribute " + "\"" + m_resolvedLhsName + "\"");
}
m_lhsAttIndex = lhs.index();
if (m_rhsIsAttribute) {
Attribute rhs = null;
// try as an index or "special" label first
if (m_resolvedRhsOperand.toLowerCase().equals("/first")) {
rhs = structure.attribute(0);
} else if (m_resolvedRhsOperand.toLowerCase().equals("/last")) {
rhs = structure.attribute(structure.numAttributes() - 1);
} else {
// try as an index
try {
int indx = Integer.parseInt(m_resolvedRhsOperand);
indx--;
rhs = structure.attribute(indx);
} catch (NumberFormatException ex) {
}
}
if (rhs == null) {
rhs = structure.attribute(m_resolvedRhsOperand);
}
if (rhs == null) {
throw new IllegalArgumentException(
"Data does not contain attribute " + "\"" + m_resolvedRhsOperand + "\"");
}
m_rhsAttIndex = rhs.index();
} else if (m_operator != ExpressionType.CONTAINS
&& m_operator != ExpressionType.STARTSWITH
&& m_operator != ExpressionType.ENDSWITH
&& m_operator != ExpressionType.REGEX
&& m_operator != ExpressionType.ISMISSING) {
// make sure the operand is parseable as a number (unless missing has
// been specified - equals only)
if (lhs.isNominal()) {
m_numericOperand = lhs.indexOfValue(m_resolvedRhsOperand);
if (m_numericOperand < 0) {
throw new IllegalArgumentException(
"Unknown nominal value '"
+ m_resolvedRhsOperand
+ "' for attribute '"
+ lhs.name()
+ "'");
}
} else {
try {
m_numericOperand = Double.parseDouble(m_resolvedRhsOperand);
} catch (NumberFormatException e) {
throw new IllegalArgumentException(
"\"" + m_resolvedRhsOperand + "\" is not parseable as a number!");
}
}
}
if (m_operator == ExpressionType.REGEX) {
m_regexPattern = Pattern.compile(m_resolvedRhsOperand);
}
}