1/* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5/* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22package com.sun.org.apache.xerces.internal.impl.dv.xs; 23 24import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException; 25import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext; 26 27/** 28 * All primitive types plus ID/IDREF/ENTITY/INTEGER are derived from this abstract 29 * class. It provides extra information XSSimpleTypeDecl requires from each 30 * type: allowed facets, converting String to actual value, check equality, 31 * comparison, etc. 32 * 33 * @xerces.internal 34 * 35 * @author Neeraj Bajaj, Sun Microsystems, inc. 36 * @author Sandy Gao, IBM 37 * 38 */ 39public abstract class TypeValidator { 40 41 // which facets are allowed for this type 42 public abstract short getAllowedFacets(); 43 44 // convert a string to an actual value. for example, 45 // for number types (decimal, double, float, and types derived from them), 46 // get the BigDecimal, Double, Flout object. 47 // for some types (string and derived), they just return the string itself 48 public abstract Object getActualValue(String content, ValidationContext context) 49 throws InvalidDatatypeValueException; 50 51 // for ID/IDREF/ENTITY types, do some extra checking after the value is 52 // checked to be valid with respect to both lexical representation and 53 // facets 54 public void checkExtraRules(Object value, ValidationContext context) throws InvalidDatatypeValueException { 55 } 56 57 // the following methods might not be supported by every DV. 58 // but XSSimpleTypeDecl should know which type supports which methods, 59 // and it's an *internal* error if a method is called on a DV that 60 // doesn't support it. 61 62 //order constants 63 public static final short LESS_THAN = -1; 64 public static final short EQUAL = 0; 65 public static final short GREATER_THAN = 1; 66 public static final short INDETERMINATE = 2; 67 68 // where there is distinction between identity and equality, this method 69 // will be overwritten 70 // checks whether the two values are identical; for ex, this distinguishes 71 // -0.0 from 0.0 72 public boolean isIdentical (Object value1, Object value2) { 73 return value1.equals(value2); 74 } 75 76 // check the order relation between the two values 77 // the parameters are in compiled form (from getActualValue) 78 public int compare(Object value1, Object value2) { 79 return -1; 80 } 81 82 // get the length of the value 83 // the parameters are in compiled form (from getActualValue) 84 public int getDataLength(Object value) { 85 return (value instanceof String) ? ((String)value).length() : -1; 86 } 87 88 // get the number of digits of the value 89 // the parameters are in compiled form (from getActualValue) 90 public int getTotalDigits(Object value) { 91 return -1; 92 } 93 94 // get the number of fraction digits of the value 95 // the parameters are in compiled form (from getActualValue) 96 public int getFractionDigits(Object value) { 97 return -1; 98 } 99 100 // check whether the character is in the range 0x30 ~ 0x39 101 public static final boolean isDigit(char ch) { 102 return ch >= '0' && ch <= '9'; 103 } 104 105 // if the character is in the range 0x30 ~ 0x39, return its int value (0~9), 106 // otherwise, return -1 107 public static final int getDigit(char ch) { 108 return isDigit(ch) ? ch - '0' : -1; 109 } 110 111} // interface TypeValidator 112