| 1 | |
package org.kuali.student.r2.common.criteria; |
| 2 | |
|
| 3 | |
import java.io.Serializable; |
| 4 | |
import java.util.ArrayList; |
| 5 | |
import java.util.List; |
| 6 | |
|
| 7 | |
import org.kuali.rice.core.api.criteria.Predicate; |
| 8 | |
import org.kuali.rice.core.api.mo.ModelBuilder; |
| 9 | |
import org.kuali.rice.core.framework.persistence.jpa.criteria.Criteria; |
| 10 | |
|
| 11 | 0 | public class LookupCustomizer<T> { |
| 12 | |
|
| 13 | |
private List<PredicateTransform> additionalTransforms; |
| 14 | |
private List<PredicateTransform> predicateTransforms; |
| 15 | |
private final Transform<T, T> resultTransform; |
| 16 | |
|
| 17 | 0 | private LookupCustomizer(Builder<T> builder) { |
| 18 | 0 | this.additionalTransforms = builder.getAdditionalTransforms(); |
| 19 | 0 | this.predicateTransforms = builder.getPredicateTransforms(); |
| 20 | 0 | this.resultTransform = builder.getResultTransform() != null ? builder.getResultTransform() : IndentityTransform.<T, T>getInstance(); |
| 21 | 0 | } |
| 22 | |
|
| 23 | |
public Predicate applyAdditionalTransforms(Predicate predicate, Criteria criteria) { |
| 24 | 0 | for (PredicateTransform transform : additionalTransforms){ |
| 25 | 0 | predicate = transform.apply(predicate, criteria); |
| 26 | |
} |
| 27 | 0 | return predicate; |
| 28 | |
} |
| 29 | |
|
| 30 | |
public Predicate applyPredicateTransforms(Predicate predicate, Criteria criteria) { |
| 31 | 0 | for (PredicateTransform transform : predicateTransforms){ |
| 32 | 0 | predicate = transform.apply(predicate, criteria); |
| 33 | |
} |
| 34 | 0 | return predicate; |
| 35 | |
} |
| 36 | |
|
| 37 | |
public T applyResultTransforms(Object o) { |
| 38 | 0 | return null; |
| 39 | |
} |
| 40 | |
|
| 41 | |
public List<PredicateTransform> getAdditionalTransforms() { |
| 42 | 0 | return additionalTransforms; |
| 43 | |
} |
| 44 | |
|
| 45 | |
public void setAdditionalTransforms(List<PredicateTransform> additionalTransforms) { |
| 46 | 0 | this.additionalTransforms = additionalTransforms; |
| 47 | 0 | } |
| 48 | |
|
| 49 | |
public List<PredicateTransform> getPredicateTransforms() { |
| 50 | 0 | return predicateTransforms; |
| 51 | |
} |
| 52 | |
|
| 53 | |
public void setPredicateTransforms(List<PredicateTransform> predicateTransforms) { |
| 54 | 0 | this.predicateTransforms = predicateTransforms; |
| 55 | 0 | } |
| 56 | |
|
| 57 | |
public Transform<T, T> getResultTransform() { |
| 58 | 0 | return resultTransform; |
| 59 | |
} |
| 60 | |
|
| 61 | 0 | public static final class Builder<T> implements ModelBuilder, Serializable { |
| 62 | |
|
| 63 | |
private List<PredicateTransform> additionalTransforms; |
| 64 | |
private List<PredicateTransform> predicateTransforms; |
| 65 | |
private Transform<T, T> resultTransform; |
| 66 | |
|
| 67 | 0 | private Builder() { |
| 68 | |
|
| 69 | 0 | } |
| 70 | |
|
| 71 | |
public static <T> Builder<T> create() { |
| 72 | 0 | return new Builder<T>(); |
| 73 | |
} |
| 74 | |
|
| 75 | |
public List<PredicateTransform> getAdditionalTransforms() { |
| 76 | 0 | return additionalTransforms; |
| 77 | |
} |
| 78 | |
|
| 79 | |
public void setAdditionalTransforms(List<PredicateTransform> additionalTransforms) { |
| 80 | 0 | this.additionalTransforms = additionalTransforms; |
| 81 | 0 | } |
| 82 | |
|
| 83 | |
public List<PredicateTransform> getPredicateTransforms() { |
| 84 | 0 | return predicateTransforms; |
| 85 | |
} |
| 86 | |
|
| 87 | |
public void setPredicateTransforms(List<PredicateTransform> predicateTransforms) { |
| 88 | 0 | this.predicateTransforms = predicateTransforms; |
| 89 | 0 | } |
| 90 | |
|
| 91 | |
public Transform<T, T> getResultTransform() { |
| 92 | 0 | return resultTransform; |
| 93 | |
} |
| 94 | |
|
| 95 | |
public void setResultTransform(final Transform<T, T> resultTransform) { |
| 96 | 0 | this.resultTransform = resultTransform; |
| 97 | 0 | } |
| 98 | |
|
| 99 | |
@Override |
| 100 | |
public LookupCustomizer<T> build() { |
| 101 | 0 | if (additionalTransforms == null){ |
| 102 | 0 | additionalTransforms = new ArrayList<LookupCustomizer.PredicateTransform>(); |
| 103 | |
} |
| 104 | 0 | if (predicateTransforms == null){ |
| 105 | 0 | predicateTransforms = new ArrayList<LookupCustomizer.PredicateTransform>(); |
| 106 | |
} |
| 107 | 0 | return new LookupCustomizer<T>(this); |
| 108 | |
} |
| 109 | |
} |
| 110 | |
|
| 111 | |
public interface PredicateTransform { |
| 112 | |
Predicate apply(Predicate input, Criteria criteria); |
| 113 | |
} |
| 114 | |
|
| 115 | |
public interface Transform<P, R> { |
| 116 | |
R apply(P input); |
| 117 | |
} |
| 118 | |
|
| 119 | |
|
| 120 | |
|
| 121 | |
|
| 122 | |
|
| 123 | |
|
| 124 | 0 | private static final class IndentityTransform<I> implements Transform<I, I> { |
| 125 | |
|
| 126 | |
@SuppressWarnings("unchecked") |
| 127 | 0 | private static final Transform INSTANCE = new IndentityTransform(); |
| 128 | |
|
| 129 | |
@SuppressWarnings("unchecked") |
| 130 | |
public static <P, R> Transform<P, R> getInstance() { |
| 131 | 0 | return INSTANCE; |
| 132 | |
} |
| 133 | |
|
| 134 | |
@Override |
| 135 | |
public I apply(final I input) { |
| 136 | 0 | return input; |
| 137 | |
} |
| 138 | |
} |
| 139 | |
|
| 140 | |
} |