/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.alibaba.citrus.service.form.impl.validation;
import static com.alibaba.citrus.service.form.support.CompareOperator.*;
import static com.alibaba.citrus.util.StringUtil.*;
import com.alibaba.citrus.service.form.support.AbstractNumberValidator;
import com.alibaba.citrus.service.form.support.AbstractValidatorDefinitionParser;
import com.alibaba.citrus.service.form.support.CompareOperator;
import com.alibaba.citrus.service.form.support.NumberSupport;
/**
* 验证用户输入的是正确的数字格式，并且数字符合限定的范围。
*
* @author Michael Zhou
*/
public class NumberValidator extends AbstractNumberValidator {
private NumberSupport[] operands = new NumberSupport[CompareOperator.values().length];
/** 取得限定值：等于。 */
public String getEqualTo() {
return getOperandString(equalTo);
}
/** 设置限定值：等于。 */
public void setEqualTo(String value) {
setOperand(equalTo, value);
}
/** 取得限定值：不等于。 */
public String getNotEqualTo() {
return getOperandString(notEqualTo);
}
/** 设置限定值：不等于。 */
public void setNotEqualTo(String value) {
setOperand(notEqualTo, value);
}
/** 取得限定值：小于。 */
public String getLessThan() {
return getOperandString(lessThan);
}
/** 设置限定值：小于。 */
public void setLessThan(String value) {
setOperand(lessThan, value);
}
/** 取得限定值：大于。 */
public String getGreaterThan() {
return getOperandString(greaterThan);
}
/** 设置限定值：大于。 */
public void setGreaterThan(String value) {
setOperand(greaterThan, value);
}
/** 取得限定值：小于等于。 */
public String getLessThanOrEqualTo() {
return getOperandString(lessThanOrEqualTo);
}
/** 设置限定值：小于等于。 */
public void setLessThanOrEqualTo(String value) {
setOperand(lessThanOrEqualTo, value);
}
/** 取得限定值：大于等于。 */
public String getGreaterThanOrEqualTo() {
return getOperandString(greaterThanOrEqualTo);
}
/** 设置限定值：大于等于。 */
public void setGreaterThanOrEqualTo(String value) {
setOperand(greaterThanOrEqualTo, value);
}
private String getOperandString(CompareOperator op) {
NumberSupport n = getOperand(op);
return n == null ? null : n.getStringValue();
}
public final NumberSupport getOperand(CompareOperator op) {
return operands[op.ordinal()];
}
protected final void setOperand(CompareOperator op, String value) {
operands[op.ordinal()] = new NumberSupport(null, trimToNull(value));
}
@Override
protected void init() throws Exception {
super.init();
// parse operands, throws NumberFormatException
for (NumberSupport operand : operands) {
if (operand != null) {
operand.setNumberType(getNumberType());
operand.getValue();
}
}
}
/** 验证一个字段。 */
@Override
protected boolean validate(Context context, String value) {
NumberSupport numberValue = new NumberSupport(getNumberType(), value);
boolean valid = true;
try {
numberValue.getValue();
} catch (NumberFormatException e) {
valid = false;
}
if (valid) {
for (int i = 0; i < operands.length; i++) {
if (operands[i] != null) {
valid &= CompareOperator.values()[i].accept(numberValue.compareTo(operands[i]));
}
}
}
return valid;
}
public static class DefinitionParser extends AbstractValidatorDefinitionParser<NumberValidator> {
}
}