1 package org.apache.maven.search.request;
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22 import static java.util.Objects.requireNonNull;
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27 public abstract class BooleanQuery extends Query
28 {
29 private final Query left;
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31 private final Query right;
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33 protected BooleanQuery( Query left, String op, Query right )
34 {
35 super( op );
36 this.left = requireNonNull( left );
37 this.right = requireNonNull( right );
38 }
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43 public Query getLeft()
44 {
45 return left;
46 }
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51 public Query getRight()
52 {
53 return right;
54 }
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56 @Override
57 public String toString()
58 {
59 return getLeft() + " " + getValue() + " " + getRight();
60 }
61
62 public static final class And extends BooleanQuery
63 {
64 private And( Query left, Query right )
65 {
66 super( left, "AND", right );
67 }
68 }
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74 public static BooleanQuery and( Query left, Query... rights )
75 {
76 if ( rights.length == 0 )
77 {
78 throw new IllegalArgumentException( "one or more on right needed" );
79 }
80 BooleanQuery result = null;
81 for ( Query right : rights )
82 {
83 result = new And( result == null ? left : result, right );
84 }
85 return result;
86 }
87 }