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Data processing utilities for ClickHouse
package com.clickhouse.data;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Locale;
/**
* Utility class for validation.
*/
public final class ClickHouseChecker {
private static final String DEFAULT_NAME = "value";
private static final String ERR_SHOULD_BETWEEN = "%s(%s) should be between %s and %s inclusive of both values";
private static final String ERR_SHOULD_BETWEEN_EXCLUSIVE = "%s(%s) should be between %s and %s exclusive of both values";
private static final String ERR_SHOULD_GE = "%s(%s) should NOT be less than %s";
static final IllegalArgumentException newException(String format, Object... args) {
return new IllegalArgumentException(String.format(Locale.ROOT, format, args));
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static int between(int value, int minValue, int maxValue) {
return between(value, DEFAULT_NAME, minValue, maxValue);
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static long between(long value, long minValue, long maxValue) {
return between(value, DEFAULT_NAME, minValue, maxValue);
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static int between(byte value, String name, byte minValue, byte maxValue) {
if (value < minValue || value > maxValue) {
throw newException(ERR_SHOULD_BETWEEN, name, value, minValue, maxValue);
}
return value;
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static int between(int value, String name, int minValue, int maxValue) {
if (value < minValue || value > maxValue) {
throw newException(ERR_SHOULD_BETWEEN, name, value, minValue, maxValue);
}
return value;
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static long between(long value, String name, long minValue, long maxValue) {
if (value < minValue || value > maxValue) {
throw newException(ERR_SHOULD_BETWEEN, name, value, minValue, maxValue);
}
return value;
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static BigInteger between(BigInteger value, BigInteger minValue, BigInteger maxValue) {
return between(value, DEFAULT_NAME, minValue, maxValue);
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} inclusive and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static BigInteger between(BigInteger value, String name, BigInteger minValue, BigInteger maxValue) {
if (value.compareTo(minValue) < 0 || value.compareTo(maxValue) > 0) {
throw newException(ERR_SHOULD_BETWEEN, name, value, minValue, maxValue);
}
return value;
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} *exclusive* and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static BigDecimal between(BigDecimal value, BigDecimal minValue, BigDecimal maxValue) {
return between(value, DEFAULT_NAME, minValue, maxValue);
}
/**
* Checks if the given {@code value} is between {@code minValue} and
* {@code maxValue} *exclusive* and throws a customized
* {@link IllegalArgumentException} if it is NOT.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @param maxValue maximum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is NOT between
* {@code minValue} and {@code maxValue}
*/
public static BigDecimal between(BigDecimal value, String name, BigDecimal minValue, BigDecimal maxValue) {
if (value.compareTo(minValue) <= 0 || value.compareTo(maxValue) >= 0) {
throw newException(ERR_SHOULD_BETWEEN_EXCLUSIVE, name, value, minValue, maxValue);
}
return value;
}
/**
* Checks if the given string is {@code null} or empty.
*
* @param value the string to check
* @return true if the string is null or empty; false otherwise
*/
public static boolean isNullOrEmpty(CharSequence value) {
return value == null || value.length() == 0;
}
/**
* Checks if the given string is null, empty string or a string only contains
* white spaces.
*
* @param value the string to check
* @return true if the string is null, empty or blank； false otherwise
*/
public static boolean isNullOrBlank(CharSequence value) {
if (isNullOrEmpty(value)) {
return true;
}
for (int i = 0, len = value.length(); i < len; i++) {
if (!Character.isWhitespace(value.charAt(i))) {
return false;
}
}
return true;
}
/**
* Checks if the given string is not {@code null}, empty or blank and throws a
* customized {@link IllegalArgumentException} if it is.
*
* @param value the string to check
* @param name name of the string
* @return the exact same string
* @throws IllegalArgumentException if the string is null, empty or blank
*/
public static String nonBlank(String value, String name) {
if (isNullOrBlank(value)) {
throw newException("%s cannot be null, empty or blank string", name);
}
return value;
}
/**
* Checks if the given string is neither {@code null} nor empty and throws a
* customized {@link IllegalArgumentException} if it is.
*
* @param value the string to check
* @param name name of the string
* @return the exact same string
* @throws IllegalArgumentException if the string is null or empty
*/
public static String nonEmpty(String value, String name) {
if (isNullOrEmpty(value)) {
throw newException("%s cannot be null or empty string", name);
}
return value;
}
/**
* Checks if the given object is NOT {@code null} and throws a customized
* {@link IllegalArgumentException} if it is.
*
* @param type of the object
* @param value the object
* @param name name of the object
* @return the exact same object
* @throws IllegalArgumentException if the object is null
*/
public static final T nonNull(T value, String name) {
if (value == null) {
throw newException("Non-null %s is required", name);
}
return value;
}
/**
* Checks if the given {@code value} is NOT less than {@code minValue} and
* throws a customized {@link IllegalArgumentException} if it is.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is less than
* {@code minValue}
*/
public static int notLessThan(int value, String name, int minValue) {
if (value < minValue) {
throw newException(ERR_SHOULD_GE, name, value, minValue);
}
return value;
}
/**
* Checks if the given {@code value} is NOT less than {@code minValue} and
* throws a customized {@link IllegalArgumentException} if it is.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is less than
* {@code minValue}
*/
public static long notLessThan(long value, String name, long minValue) {
if (value < minValue) {
throw newException(ERR_SHOULD_GE, name, value, minValue);
}
return value;
}
/**
* Checks if the given {@code value} is NOT less than {@code minValue} and
* throws a customized {@link IllegalArgumentException} if it is.
*
* @param value the value to check
* @param name name of the value
* @param minValue minimum value to compare with
* @return the exact same value
* @throws IllegalArgumentException if the {@code value} is less than
* {@code minValue}
*/
public static BigInteger notLessThan(BigInteger value, String name, BigInteger minValue) {
if (value.compareTo(minValue) < 0) {
throw newException(ERR_SHOULD_GE, name, value, minValue);
}
return value;
}
/**
* Checks if length of the given byte array is NOT greater than {@code length}
* and throws a customized {@link IllegalArgumentException} if it is.
*
* @param value the byte array to check
* @param name name of the byte array
* @param maxLength maximum length of the byte array
* @return the exact same byte array
* @throws IllegalArgumentException if length of the byte array is greater than
* {@code maxlength}
*/
public static byte[] notLongerThan(byte[] value, String name, int maxLength) {
int length = value == null ? 0 : value.length;
if (length > maxLength) {
throw newException("length of byte array %s is %d, which should NOT longer than %d", name, length,
maxLength);
}
return value;
}
private ClickHouseChecker() {
}
}