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.TableFeature;
008    import org.maltparser.core.symbol.nullvalue.NullValues.NullValueId;
009    import org.maltparser.core.syntaxgraph.SyntaxGraphException;
010    import org.maltparser.core.syntaxgraph.node.DependencyNode;
011    
012    public class InputTableFeature extends TableFeature {
013            protected AddressFunction addressFunction;
014    
015            public InputTableFeature(DataFormatInstance dataFormatInstance) throws MaltChainedException {
016                    super();
017                    setTableHandler(dataFormatInstance.getSymbolTables());
018            }
019            
020            public void initialize(Object[] arguments) throws MaltChainedException {
021                    if (arguments.length != 2) {
022                            throw new SyntaxGraphException("Could not initialize InputTableFeature: number of arguments are not correct. ");
023                    }
024                    if (!(arguments[0] instanceof String)) {
025                            throw new SyntaxGraphException("Could not initialize InputTableFeature: the first argument is not a string. ");
026                    }
027                    if (!(arguments[1] instanceof AddressFunction)) {
028                            throw new SyntaxGraphException("Could not initialize InputTableFeature: the second argument is not an address function. ");
029                    }
030                    setTableName((String)arguments[0]);
031                    setSymbolTable(tableHandler.getSymbolTable(getTableName()));
032                    setAddressFunction((AddressFunction)arguments[1]);
033            }
034            
035            public Class<?>[] getParameterTypes() {
036                    Class<?>[] paramTypes = { java.lang.String.class, org.maltparser.core.feature.function.AddressFunction.class };
037                    return paramTypes; 
038            }
039    
040            public void update()  throws MaltChainedException {
041                    final AddressValue a = addressFunction.getAddressValue();
042                    
043                    if (a.getAddress() == null) {
044                            if (getSymbolTable() != null) {
045                                    featureValue.setIndexCode(getSymbolTable().getNullValueCode(NullValueId.NO_NODE));
046                                    featureValue.setSymbol(getSymbolTable().getNullValueSymbol(NullValueId.NO_NODE));
047                            } else {
048                                    featureValue.setIndexCode(0);
049                                    featureValue.setSymbol("#null");
050                            }
051    //                      featureValue.setKnown(true);
052                            featureValue.setNullValue(true);                        
053                    } else {
054                            final DependencyNode node = (DependencyNode)a.getAddress();
055                            if (!node.isRoot()) {
056                                    if (getSymbolTable() != null && node.hasLabel(getSymbolTable())) {
057                                            featureValue.setIndexCode(node.getLabelCode(getSymbolTable()));
058                                            featureValue.setSymbol(getSymbolTable().getSymbolCodeToString(node.getLabelCode(getSymbolTable())));
059    //                                      featureValue.setKnown(getSymbolTable().getKnown(node.getLabelCode(getSymbolTable())));
060                                            featureValue.setNullValue(false);
061                                    } else {
062    //                                              featureValue.setCode(0);
063    //                                              featureValue.setSymbol("#null");
064                                            if (getSymbolTable() != null) {
065                                                    featureValue.setIndexCode(getSymbolTable().getNullValueCode(NullValueId.NO_VALUE));
066                                                    featureValue.setSymbol(getSymbolTable().getNullValueSymbol(NullValueId.NO_VALUE));
067                                            } 
068    //                                              else {
069    //                                                      featureValue.setCode(0);
070    //                                                      featureValue.setSymbol("#null");
071    //                                              }
072    //                                      featureValue.setKnown(true);
073                                            featureValue.setNullValue(true);
074                                    }       
075                            } else {
076                                    if (getSymbolTable() != null) {
077                                            featureValue.setIndexCode(getSymbolTable().getNullValueCode(NullValueId.ROOT_NODE));
078                                            featureValue.setSymbol(getSymbolTable().getNullValueSymbol(NullValueId.ROOT_NODE));
079                                    } 
080    //                                      else {
081    //                                              featureValue.setCode(0);
082    //                                              featureValue.setSymbol("#null");
083    //                                      }
084    //                                      featureValue.setCode(0);
085    //                                      featureValue.setSymbol("#null");
086    //                              featureValue.setKnown(true);
087                                    featureValue.setNullValue(true);
088                            }
089                    }
090                    featureValue.setValue(1);
091            }
092            
093            public AddressFunction getAddressFunction() {
094                    return addressFunction;
095            }
096    
097            public void setAddressFunction(AddressFunction addressFunction) {
098                    this.addressFunction = addressFunction;
099            }
100            
101            public boolean equals(Object obj) {
102                    if (this == obj)
103                            return true;
104                    if (obj == null)
105                            return false;
106                    if (getClass() != obj.getClass())
107                            return false;
108                    return obj.toString().equals(toString());
109            }
110            
111            public int hashCode() {
112                    return 217 + (null == toString() ? 0 : toString().hashCode());
113            }
114            
115            public String toString() {
116                    final StringBuilder sb = new StringBuilder();
117                    sb.append("InputTable(");
118                    sb.append(super.toString());
119                    sb.append(", ");
120                    sb.append(addressFunction.toString());
121                    sb.append(")");
122                    return sb.toString();
123            }
124    
125    }