1 package org.apache.maven.plugin;
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22 import java.util.Iterator;
23 import java.util.List;
24 import java.util.Objects;
25
26 import org.apache.maven.model.Dependency;
27 import org.apache.maven.model.Exclusion;
28 import org.apache.maven.model.Plugin;
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32
33 class CacheUtils
34 {
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38
39 @Deprecated
40 public static <T> boolean eq( T s1, T s2 )
41 {
42 return Objects.equals( s1, s2 );
43 }
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45
46
47
48 @Deprecated
49 public static int hash( Object obj )
50 {
51 return obj != null ? obj.hashCode() : 0;
52 }
53
54 public static int pluginHashCode( Plugin plugin )
55 {
56 int hash = 17;
57
58 hash = hash * 31 + Objects.hashCode( plugin.getGroupId() );
59 hash = hash * 31 + Objects.hashCode( plugin.getArtifactId() );
60 hash = hash * 31 + Objects.hashCode( plugin.getVersion() );
61
62 hash = hash * 31 + ( plugin.isExtensions() ? 1 : 0 );
63
64 for ( Dependency dependency : plugin.getDependencies() )
65 {
66 hash = hash * 31 + Objects.hashCode( dependency.getGroupId() );
67 hash = hash * 31 + Objects.hashCode( dependency.getArtifactId() );
68 hash = hash * 31 + Objects.hashCode( dependency.getVersion() );
69 hash = hash * 31 + Objects.hashCode( dependency.getType() );
70 hash = hash * 31 + Objects.hashCode( dependency.getClassifier() );
71 hash = hash * 31 + Objects.hashCode( dependency.getScope() );
72
73 for ( Exclusion exclusion : dependency.getExclusions() )
74 {
75 hash = hash * 31 + Objects.hashCode( exclusion.getGroupId() );
76 hash = hash * 31 + Objects.hashCode( exclusion.getArtifactId() );
77 }
78 }
79
80 return hash;
81 }
82
83 public static boolean pluginEquals( Plugin a, Plugin b )
84 {
85 return Objects.equals( a.getArtifactId(), b.getArtifactId() )
86 && Objects.equals( a.getGroupId(), b.getGroupId() )
87 && Objects.equals( a.getVersion(), b.getVersion() )
88 && a.isExtensions() == b.isExtensions()
89 && dependenciesEquals( a.getDependencies(), b.getDependencies() );
90 }
91
92 private static boolean dependenciesEquals( List<Dependency> a, List<Dependency> b )
93 {
94 if ( a.size() != b.size() )
95 {
96 return false;
97 }
98
99 Iterator<Dependency> aI = a.iterator();
100 Iterator<Dependency> bI = b.iterator();
101
102 while ( aI.hasNext() )
103 {
104 Dependency aD = aI.next();
105 Dependency bD = bI.next();
106
107 boolean r = Objects.equals( aD.getGroupId(), bD.getGroupId() )
108 && Objects.equals( aD.getArtifactId(), bD.getArtifactId() )
109 && Objects.equals( aD.getVersion(), bD.getVersion() )
110 && Objects.equals( aD.getType(), bD.getType() )
111 && Objects.equals( aD.getClassifier(), bD.getClassifier() )
112 && Objects.equals( aD.getScope(), bD.getScope() );
113
114 r &= exclusionsEquals( aD.getExclusions(), bD.getExclusions() );
115
116 if ( !r )
117 {
118 return false;
119 }
120 }
121
122 return true;
123 }
124
125 private static boolean exclusionsEquals( List<Exclusion> a, List<Exclusion> b )
126 {
127 if ( a.size() != b.size() )
128 {
129 return false;
130 }
131
132 Iterator<Exclusion> aI = a.iterator();
133 Iterator<Exclusion> bI = b.iterator();
134
135 while ( aI.hasNext() )
136 {
137 Exclusion aD = aI.next();
138 Exclusion bD = bI.next();
139
140 boolean r = Objects.equals( aD.getGroupId(), bD.getGroupId() )
141 && Objects.equals( aD.getArtifactId(), bD.getArtifactId() );
142
143 if ( !r )
144 {
145 return false;
146 }
147 }
148
149 return true;
150 }
151
152 }