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Diffstat (limited to 'src/main/java/com/iciql/ValueCount.java')
-rw-r--r-- | src/main/java/com/iciql/ValueCount.java | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/main/java/com/iciql/ValueCount.java b/src/main/java/com/iciql/ValueCount.java new file mode 100644 index 0000000..dfc8570 --- /dev/null +++ b/src/main/java/com/iciql/ValueCount.java @@ -0,0 +1,71 @@ +/* + * Copyright 2016 James Moger. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.iciql; + +import java.io.Serializable; +import java.util.Date; + +public class ValueCount<X> implements Serializable, Comparable<ValueCount<X>> { + + private final static long serialVersionUID = 1L; + + private final X value; + private final long count; + + ValueCount(X x, long count) { + this.value = x; + this.count = count; + } + + public X getValue() { + return value; + } + + public long getCount() { + return count; + } + + @Override + public String toString() { + return String.format("%s=%d", value, count); + } + + @Override + public int compareTo(ValueCount<X> o) { + return (count < o.count) ? -1 : ((count == o.count) ? compareValue(o.value) : 1); + } + + private int compareValue(X anotherValue) { + if (value == null && anotherValue == null) { + return 0; + } else if (value == null) { + return 1; + } else if (anotherValue == null) { + return -1; + } + + if (Number.class.isAssignableFrom(value.getClass())) { + long n1 = ((Number) value).longValue(); + long n2 = ((Number) anotherValue).longValue(); + return (n1 < n2) ? -1 : ((n1 == n2) ? 0 : 1); + } else if (Date.class.isAssignableFrom(value.getClass())) { + return ((Date) value).compareTo((Date) anotherValue); + } + + return value.toString().compareToIgnoreCase(anotherValue.toString()); + } +} + |