001    package org.maltparser.core.syntaxgraph.feature;
002    
003    import org.maltparser.core.exception.MaltChainedException;
004    import org.maltparser.core.feature.function.AddressFunction;
005    import org.maltparser.core.feature.value.AddressValue;
006    import org.maltparser.core.io.dataformat.DataFormatInstance;
007    import org.maltparser.core.symbol.nullvalue.NullValues.NullValueId;
008    import org.maltparser.core.syntaxgraph.SyntaxGraphException;
009    import org.maltparser.core.syntaxgraph.node.DependencyNode;
010    
011    /**
012    *
013    *
014    * @author Johan Hall
015    */
016    public final class InputColumnFeature extends ColumnFeature {
017            protected AddressFunction addressFunction;
018            protected DataFormatInstance dataFormatInstance;
019            
020            public InputColumnFeature(DataFormatInstance dataFormatInstance) throws MaltChainedException {
021                    super();
022                    setDataFormatInstance(dataFormatInstance);
023            }
024            
025            public void initialize(Object[] arguments) throws MaltChainedException {
026                    if (arguments.length != 2) {
027                            throw new SyntaxGraphException("Could not initialize InputColumnFeature: number of arguments are not correct. ");
028                    }
029                    if (!(arguments[0] instanceof String)) {
030                            throw new SyntaxGraphException("Could not initialize InputColumnFeature: the first argument is not a string. ");
031                    }
032                    if (!(arguments[1] instanceof AddressFunction)) {
033                            throw new SyntaxGraphException("Could not initialize InputColumnFeature: the second argument is not an address function. ");
034                    }
035                    setColumn(dataFormatInstance.getColumnDescriptionByName((String)arguments[0]));
036                    setAddressFunction((AddressFunction)arguments[1]);
037            }
038            
039            public Class<?>[] getParameterTypes() {
040                    Class<?>[] paramTypes = { java.lang.String.class, org.maltparser.core.feature.function.AddressFunction.class };
041                    return paramTypes; 
042            }
043            
044            public void update() throws MaltChainedException {
045                    final AddressValue a = addressFunction.getAddressValue();
046                    
047                    if (a.getAddress() == null) { 
048                            featureValue.setCode(column.getSymbolTable().getNullValueCode(NullValueId.NO_NODE));
049                            featureValue.setSymbol(column.getSymbolTable().getNullValueSymbol(NullValueId.NO_NODE));
050                            featureValue.setKnown(true);
051                            featureValue.setNullValue(true);                        
052                    } else {
053    //                      try {
054    //                              a.getAddressClass().asSubclass(org.maltparser.core.syntaxgraph.node.DependencyNode.class);
055                                    final DependencyNode node = (DependencyNode)a.getAddress();
056                                    
057                                    if (!node.isRoot()) { 
058                                            featureValue.setCode(node.getLabelCode(column.getSymbolTable()));
059                                            featureValue.setSymbol(column.getSymbolTable().getSymbolCodeToString(node.getLabelCode(column.getSymbolTable())));
060                                            featureValue.setKnown(column.getSymbolTable().getKnown(node.getLabelCode(column.getSymbolTable())));
061                                            featureValue.setNullValue(false);
062                                    } else { 
063                                            featureValue.setCode(column.getSymbolTable().getNullValueCode(NullValueId.ROOT_NODE));
064                                            featureValue.setSymbol(column.getSymbolTable().getNullValueSymbol(NullValueId.ROOT_NODE));
065                                            featureValue.setKnown(true);
066                                            featureValue.setNullValue(true);
067                                    }
068    //                      } catch (ClassCastException e) {
069    //                              featureValue.setCode(column.getSymbolTable().getNullValueCode(NullValueId.NO_NODE));
070    //                              featureValue.setSymbol(column.getSymbolTable().getNullValueSymbol(NullValueId.NO_NODE));
071    //                              featureValue.setKnown(true);
072    //                              featureValue.setNullValue(true);
073    //                      }
074                    }
075            }
076            
077            public AddressFunction getAddressFunction() {
078                    return addressFunction;
079            }
080    
081            public void setAddressFunction(AddressFunction addressFunction) {
082                    this.addressFunction = addressFunction;
083            }
084    
085            public DataFormatInstance getDataFormatInstance() {
086                    return dataFormatInstance;
087            }
088    
089            public void setDataFormatInstance(DataFormatInstance dataFormatInstance) {
090                    this.dataFormatInstance = dataFormatInstance;
091            }
092            
093            public boolean equals(Object obj) {
094                    if (this == obj)
095                            return true;
096                    if (obj == null)
097                            return false;
098                    if (getClass() != obj.getClass())
099                            return false;
100                    return obj.toString().equals(toString());
101            }
102            
103            public int hashCode() {
104                    return 217 + (null == toString() ? 0 : toString().hashCode());
105            }
106            
107            public String toString() {
108                    final StringBuilder sb = new StringBuilder();
109                    sb.append("InputColumn(");
110                    sb.append(super.toString());
111                    sb.append(", ");
112                    sb.append(addressFunction.toString());
113                    sb.append(")");
114                    return sb.toString();
115            }
116    }