package org.maltparser.core.syntaxgraph.feature;
import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.core.feature.FeatureException;
import org.maltparser.core.feature.function.AddressFunction;
import org.maltparser.core.feature.function.FeatureFunction;
import org.maltparser.core.feature.value.AddressValue;
import org.maltparser.core.feature.value.FeatureValue;
import org.maltparser.core.feature.value.SingleFeatureValue;
import org.maltparser.core.io.dataformat.ColumnDescription;
import org.maltparser.core.io.dataformat.DataFormatInstance;
import org.maltparser.core.symbol.SymbolTable;
import org.maltparser.core.symbol.SymbolTableHandler;
import org.maltparser.core.symbol.nullvalue.NullValues.NullValueId;
import org.maltparser.core.syntaxgraph.node.DependencyNode;
/**
*
* @author Johan Hall
* @since 1.1
*
*/
public class InputArcDirFeature implements FeatureFunction {
protected ColumnDescription column;
protected DataFormatInstance dataFormatInstance;
protected SymbolTableHandler tableHandler;
protected SymbolTable table;
protected SingleFeatureValue featureValue;
protected AddressFunction addressFunction;
public InputArcDirFeature(DataFormatInstance dataFormatInstance, SymbolTableHandler tableHandler) throws MaltChainedException {
super();
setDataFormatInstance(dataFormatInstance);
setTableHandler(tableHandler);
setFeatureValue(new SingleFeatureValue(this));
}
public void initialize(Object[] arguments) throws MaltChainedException {
if (arguments.length != 2) {
throw new FeatureException("Could not initialize InputArcDirFeature: number of arguments are not correct. ");
}
if (!(arguments[0] instanceof String)) {
throw new FeatureException("Could not initialize InputArcDirFeature: the first argument is not a string. ");
}
if (!(arguments[1] instanceof AddressFunction)) {
throw new FeatureException("Could not initialize InputArcDirFeature: the second argument is not an address function. ");
}
setColumn(dataFormatInstance.getColumnDescriptionByName((String) arguments[0]));
setSymbolTable(tableHandler.addSymbolTable("ARCDIR_" + column.getName(), ColumnDescription.INPUT, "one"));
table.addSymbol("LEFT");
table.addSymbol("RIGHT");
table.addSymbol("ROOT");
setAddressFunction((AddressFunction) arguments[1]);
}
public Class<?>[] getParameterTypes() {
Class<?>[] paramTypes = {java.lang.String.class, org.maltparser.core.feature.function.AddressFunction.class};
return paramTypes;
}
public int getCode(String symbol) throws MaltChainedException {
return table.getSymbolStringToCode(symbol);
}
public String getSymbol(int code) throws MaltChainedException {
return table.getSymbolCodeToString(code);
}
public FeatureValue getFeatureValue() {
return featureValue;
}
public void updateCardinality() throws MaltChainedException {
// featureValue.setCardinality(table.getValueCounter());
}
public void update() throws MaltChainedException {
AddressValue a = addressFunction.getAddressValue();
if (a.getAddress() != null && a.getAddressClass() == org.maltparser.core.syntaxgraph.node.DependencyNode.class) {
DependencyNode node = (DependencyNode) a.getAddress();
try {
int index = Integer.parseInt(node.getLabelSymbol(column.getSymbolTable()));
if (node.isRoot()) {
featureValue.setIndexCode(table.getNullValueCode(NullValueId.ROOT_NODE));
featureValue.setSymbol(table.getNullValueSymbol(NullValueId.ROOT_NODE));
featureValue.setNullValue(true);
} else if (index == 0) {
featureValue.setIndexCode(table.getSymbolStringToCode("ROOT"));
featureValue.setSymbol("ROOT");
featureValue.setNullValue(false);
} else if (index < node.getIndex()) {
featureValue.setIndexCode(table.getSymbolStringToCode("LEFT"));
featureValue.setSymbol("LEFT");
featureValue.setNullValue(false);
} else if (index > node.getIndex()) {
featureValue.setIndexCode(table.getSymbolStringToCode("RIGHT"));
featureValue.setSymbol("RIGHT");
featureValue.setNullValue(false);
}
} catch (NumberFormatException e) {
throw new FeatureException("The index of the feature must be an integer value. ", e);
}
} else {
featureValue.setIndexCode(table.getNullValueCode(NullValueId.NO_NODE));
featureValue.setSymbol(table.getNullValueSymbol(NullValueId.NO_NODE));
featureValue.setNullValue(true);
}
featureValue.setValue(1);
// featureValue.setKnown(true);
}
public AddressFunction getAddressFunction() {
return addressFunction;
}
public void setAddressFunction(AddressFunction addressFunction) {
this.addressFunction = addressFunction;
}
public ColumnDescription getColumn() {
return column;
}
public void setColumn(ColumnDescription column) throws MaltChainedException {
if (column.getType() != ColumnDescription.INTEGER) {
throw new FeatureException("InputArc feature column must be of type integer. ");
}
this.column = column;
}
public DataFormatInstance getDataFormatInstance() {
return dataFormatInstance;
}
public void setDataFormatInstance(DataFormatInstance dataFormatInstance) {
this.dataFormatInstance = dataFormatInstance;
}
public void setFeatureValue(SingleFeatureValue featureValue) {
this.featureValue = featureValue;
}
public SymbolTable getSymbolTable() {
return table;
}
public void setSymbolTable(SymbolTable table) {
this.table = table;
}
public SymbolTableHandler getTableHandler() {
return tableHandler;
}
public void setTableHandler(SymbolTableHandler tableHandler) {
this.tableHandler = tableHandler;
}
public int getType() {
return ColumnDescription.STRING;
}
public String getMapIdentifier() {
return getSymbolTable().getName();
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof InputArcDirFeature)) {
return false;
}
if (!obj.toString().equals(this.toString())) {
return false;
}
return true;
}
@Override
public String toString() {
return "InputArcDir(" + column.getName() + ", " + addressFunction.toString() + ")";
}
}