1 // ================================================================================================= 2 // ADOBE SYSTEMS INCORPORATED 3 // Copyright 2006 Adobe Systems Incorporated 4 // All Rights Reserved 5 // 6 // NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms 7 // of the Adobe license agreement accompanying it. 8 // ================================================================================================= 9 10 package com.adobe.xmp.impl.xpath; 11 12 import java.util.ArrayList; 13 import java.util.List; 14 15 16 /** 17 * Representates an XMP XMPPath with segment accessor methods. 18 * 19 * @since 28.02.2006 20 */ 21 public class XMPPath 22 { 23 // Bits for XPathStepInfo options. 24 25 /** Marks a struct field step , also for top level nodes (schema "fields"). */ 26 public static final int STRUCT_FIELD_STEP = 0x01; 27 /** Marks a qualifier step. 28 * Note: Order is significant to separate struct/qual from array kinds! */ 29 public static final int QUALIFIER_STEP = 0x02; // 30 /** Marks an array index step */ 31 public static final int ARRAY_INDEX_STEP = 0x03; 32 /** */ 33 public static final int ARRAY_LAST_STEP = 0x04; 34 /** */ 35 public static final int QUAL_SELECTOR_STEP = 0x05; 36 /** */ 37 public static final int FIELD_SELECTOR_STEP = 0x06; 38 /** */ 39 public static final int SCHEMA_NODE = 0x80000000; 40 /** */ 41 public static final int STEP_SCHEMA = 0; 42 /** */ 43 public static final int STEP_ROOT_PROP = 1; 44 45 46 /** stores the segments of an XMPPath */ 47 private List segments = new ArrayList(5); 48 49 50 /** 51 * Append a path segment 52 * 53 * @param segment the segment to add 54 */ 55 public void add(XMPPathSegment segment) 56 { 57 segments.add(segment); 58 } 59 60 61 /** 62 * @param index the index of the segment to return 63 * @return Returns a path segment. 64 */ 65 public XMPPathSegment getSegment(int index) 66 { 67 return (XMPPathSegment) segments.get(index); 68 } 69 70 71 /** 72 * @return Returns the size of the xmp path. 73 */ 74 public int size() 75 { 76 return segments.size(); 77 } 78 79 80 /** 81 * Serializes the normalized XMP-path. 82 * @see Object#toString() 83 */ 84 public String toString() 85 { 86 StringBuffer result = new StringBuffer(); 87 int index = 1; 88 while (index < size()) 89 { 90 result.append(getSegment(index)); 91 if (index < size() - 1) 92 { 93 int kind = getSegment(index + 1).getKind(); 94 if (kind == STRUCT_FIELD_STEP || 95 kind == QUALIFIER_STEP) 96 { 97 // all but last and array indices 98 result.append('/'); 99 } 100 } 101 index++; 102 } 103 104 return result.toString(); 105 } 106 }
