| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.ofbiz.minilang.method.otherops; |
| |
| import java.math.BigDecimal; |
| import java.text.DecimalFormat; |
| import java.util.List; |
| import java.util.Locale; |
| |
| import org.apache.ofbiz.base.util.UtilXml; |
| import org.apache.ofbiz.base.util.collections.FlexibleMapAccessor; |
| import org.apache.ofbiz.base.util.string.FlexibleStringExpander; |
| import org.apache.ofbiz.minilang.MiniLangElement; |
| import org.apache.ofbiz.minilang.MiniLangException; |
| import org.apache.ofbiz.minilang.MiniLangRuntimeException; |
| import org.apache.ofbiz.minilang.MiniLangUtil; |
| import org.apache.ofbiz.minilang.MiniLangValidate; |
| import org.apache.ofbiz.minilang.SimpleMethod; |
| import org.apache.ofbiz.minilang.method.MethodContext; |
| import org.apache.ofbiz.minilang.method.MethodOperation; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implements the <calculate> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini+Language+-+minilang+-+simple-method+-+Reference">Mini-language Reference</a> |
| */ |
| public final class Calculate extends MethodOperation { |
| |
| public static final String module = Calculate.class.getName(); |
| |
| public static final int TYPE_DOUBLE = 1; |
| public static final int TYPE_FLOAT = 2; |
| public static final int TYPE_LONG = 3; |
| public static final int TYPE_INTEGER = 4; |
| public static final int TYPE_STRING = 5; |
| public static final int TYPE_BIG_DECIMAL = 6; |
| |
| private final Calculate.SubCalc calcops[]; |
| private final FlexibleStringExpander decimalFormatFse; |
| private final FlexibleStringExpander decimalScaleFse; |
| private final FlexibleMapAccessor<Object> fieldFma; |
| private final FlexibleStringExpander roundingModeFse; |
| private final int type; |
| private final String typeString; |
| |
| public Calculate(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.handleError("<calculate> element is deprecated (use <set>)", simpleMethod, element); |
| MiniLangValidate.attributeNames(simpleMethod, element, "field", "decimal-scale", "decimal-format", "rounding-mode", "type"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "field"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "field"); |
| MiniLangValidate.childElements(simpleMethod, element, "calcop", "number"); |
| } |
| this.fieldFma = FlexibleMapAccessor.getInstance(element.getAttribute("field")); |
| this.decimalFormatFse = FlexibleStringExpander.getInstance(element.getAttribute("decimal-format")); |
| this.decimalScaleFse = FlexibleStringExpander.getInstance(element.getAttribute("decimal-scale")); |
| this.roundingModeFse = FlexibleStringExpander.getInstance(element.getAttribute("rounding-mode")); |
| this.typeString = element.getAttribute("type"); |
| int type = Calculate.TYPE_BIG_DECIMAL; |
| if ("Double".equals(typeString)) { |
| type = Calculate.TYPE_DOUBLE; |
| } else if ("Float".equals(typeString)) { |
| type = Calculate.TYPE_FLOAT; |
| } else if ("Long".equals(typeString)) { |
| type = Calculate.TYPE_LONG; |
| } else if ("Integer".equals(typeString)) { |
| type = Calculate.TYPE_INTEGER; |
| } else if ("String".equals(typeString)) { |
| type = Calculate.TYPE_STRING; |
| } else if ("BigDecimal".equals(typeString)) { |
| type = Calculate.TYPE_BIG_DECIMAL; |
| } |
| this.type = type; |
| List<? extends Element> calcopElements = UtilXml.childElementList(element); |
| calcops = new Calculate.SubCalc[calcopElements.size()]; |
| int i = 0; |
| for (Element calcopElement : calcopElements) { |
| String nodeName = calcopElement.getNodeName(); |
| if ("calcop".equals(nodeName)) { |
| calcops[i] = new CalcOp(calcopElement, simpleMethod); |
| } else if ("number".equals(nodeName)) { |
| calcops[i] = new NumberOp(calcopElement, simpleMethod); |
| } else { |
| MiniLangValidate.handleError("Invalid calculate sub-element.", simpleMethod, calcopElement); |
| calcops[i] = new InvalidOp(calcopElement, simpleMethod); |
| } |
| i++; |
| } |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| String roundingModeString = roundingModeFse.expandString(methodContext.getEnvMap()); |
| int roundingMode = BigDecimal.ROUND_HALF_EVEN; |
| if ("Ceiling".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_CEILING; |
| } else if ("Floor".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_FLOOR; |
| } else if ("Up".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_UP; |
| } else if ("Down".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_DOWN; |
| } else if ("HalfUp".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_HALF_UP; |
| } else if ("HalfDown".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_HALF_DOWN; |
| } else if ("Unnecessary".equals(roundingModeString)) { |
| roundingMode = BigDecimal.ROUND_UNNECESSARY; |
| } |
| String decimalScaleString = decimalScaleFse.expandString(methodContext.getEnvMap()); |
| int decimalScale = 2; |
| if (!decimalScaleString.isEmpty()) { |
| decimalScale = Integer.valueOf(decimalScaleString).intValue(); |
| } |
| BigDecimal resultValue = BigDecimal.ZERO.setScale(decimalScale, roundingMode); |
| for (Calculate.SubCalc calcop : calcops) { |
| resultValue = resultValue.add(calcop.calcValue(methodContext, decimalScale, roundingMode)); |
| } |
| resultValue = resultValue.setScale(decimalScale, roundingMode); |
| Object resultObj = null; |
| switch (type) { |
| case TYPE_DOUBLE: |
| resultObj = Double.valueOf(resultValue.doubleValue()); |
| break; |
| case TYPE_FLOAT: |
| resultObj = Float.valueOf(resultValue.floatValue()); |
| break; |
| case TYPE_LONG: |
| resultValue = resultValue.setScale(0, roundingMode); |
| resultObj = Long.valueOf(resultValue.longValue()); |
| break; |
| case TYPE_INTEGER: |
| resultValue = resultValue.setScale(0, roundingMode); |
| resultObj = Integer.valueOf(resultValue.intValue()); |
| break; |
| case TYPE_STRING: |
| // run the decimal-formatting |
| String decimalFormatString = decimalFormatFse.expandString(methodContext.getEnvMap()); |
| DecimalFormat df = null; |
| if (!decimalFormatString.isEmpty()) { |
| df = new DecimalFormat(decimalFormatString); |
| } |
| if (df != null && resultValue.compareTo(BigDecimal.ZERO) != 0) { |
| resultObj = df.format(resultValue); |
| } else { |
| resultObj = resultValue.toString(); |
| } |
| break; |
| case TYPE_BIG_DECIMAL: |
| resultObj = resultValue; |
| break; |
| } |
| fieldFma.put(methodContext.getEnvMap(), resultObj); |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("<set "); |
| sb.append("field=\"").append(this.fieldFma).append("\" "); |
| if (!this.roundingModeFse.isEmpty()) { |
| sb.append("rounding-mode=\"").append(this.roundingModeFse).append("\" "); |
| } |
| if (!this.decimalScaleFse.isEmpty()) { |
| sb.append("decimal-scale=\"").append(this.decimalScaleFse).append("\" "); |
| } |
| if (!this.decimalFormatFse.isEmpty()) { |
| sb.append("decimal-format=\"").append(this.decimalFormatFse).append("\" "); |
| } |
| if (!typeString.isEmpty()) { |
| sb.append("type=\"").append(this.typeString).append("\" "); |
| } |
| sb.append("/>"); |
| return sb.toString(); |
| } |
| |
| /** |
| * Interface for <calculate> sub-element implementations. |
| */ |
| public interface SubCalc { |
| BigDecimal calcValue(MethodContext methodContext, int scale, int roundingMode) throws MiniLangException; |
| } |
| |
| /** |
| * Implements the <calcop> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini+Language+-+minilang+-+simple-method+-+Reference">Mini-language Reference</a> |
| */ |
| public final class CalcOp extends MiniLangElement implements SubCalc { |
| private static final int OPERATOR_ADD = 1; |
| private static final int OPERATOR_DIVIDE = 4; |
| private static final int OPERATOR_MULTIPLY = 3; |
| private static final int OPERATOR_NEGATIVE = 5; |
| private static final int OPERATOR_SUBTRACT = 2; |
| |
| private final Calculate.SubCalc calcops[]; |
| private final FlexibleMapAccessor<Object> fieldFma; |
| private final int operator; |
| |
| private CalcOp(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "field", "operator"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "operator"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "field"); |
| MiniLangValidate.childElements(simpleMethod, element, "calcop", "number"); |
| } |
| this.fieldFma = FlexibleMapAccessor.getInstance(element.getAttribute("field")); |
| String operatorStr = element.getAttribute("operator"); |
| int operator = CalcOp.OPERATOR_ADD; |
| if ("subtract".equals(operatorStr)) { |
| operator = CalcOp.OPERATOR_SUBTRACT; |
| } else if ("multiply".equals(operatorStr)) { |
| operator = CalcOp.OPERATOR_MULTIPLY; |
| } else if ("divide".equals(operatorStr)) { |
| operator = CalcOp.OPERATOR_DIVIDE; |
| } else if ("negative".equals(operatorStr)) { |
| operator = CalcOp.OPERATOR_NEGATIVE; |
| } |
| this.operator = operator; |
| List<? extends Element> calcopElements = UtilXml.childElementList(element); |
| calcops = new Calculate.SubCalc[calcopElements.size()]; |
| int i = 0; |
| for (Element calcopElement : calcopElements) { |
| if ("calcop".equals(calcopElement.getNodeName())) { |
| calcops[i] = new Calculate.CalcOp(calcopElement, simpleMethod); |
| } else if ("number".equals(calcopElement.getNodeName())) { |
| calcops[i] = new Calculate.NumberOp(calcopElement, simpleMethod); |
| } else { |
| MiniLangValidate.handleError("Invalid calculate sub-element.", simpleMethod, calcopElement); |
| calcops[i] = new InvalidOp(calcopElement, simpleMethod); |
| } |
| i++; |
| } |
| } |
| |
| @Override |
| public BigDecimal calcValue(MethodContext methodContext, int scale, int roundingMode) throws MiniLangException { |
| BigDecimal resultValue = BigDecimal.ZERO.setScale(scale, roundingMode); |
| boolean isFirst = true; |
| Object fieldObj = fieldFma.get(methodContext.getEnvMap()); |
| if (fieldObj != null) { |
| if (fieldObj instanceof Double) { |
| resultValue = new BigDecimal(((Double) fieldObj).doubleValue()); |
| } else if (fieldObj instanceof Long) { |
| resultValue = BigDecimal.valueOf(((Long) fieldObj).longValue()); |
| } else if (fieldObj instanceof Float) { |
| resultValue = new BigDecimal(((Float) fieldObj).floatValue()); |
| } else if (fieldObj instanceof Integer) { |
| resultValue = BigDecimal.valueOf(((Integer) fieldObj).longValue()); |
| } else if (fieldObj instanceof String) { |
| resultValue = new BigDecimal((String) fieldObj); |
| } else if (fieldObj instanceof BigDecimal) { |
| resultValue = (BigDecimal) fieldObj; |
| } |
| if (operator == OPERATOR_NEGATIVE) |
| resultValue = resultValue.negate(); |
| isFirst = false; |
| } |
| for (SubCalc calcop : calcops) { |
| if (isFirst) { |
| resultValue = calcop.calcValue(methodContext, scale, roundingMode); |
| if (operator == OPERATOR_NEGATIVE) |
| resultValue = resultValue.negate(); |
| isFirst = false; |
| } else { |
| switch (operator) { |
| case OPERATOR_ADD: |
| resultValue = resultValue.add(calcop.calcValue(methodContext, scale, roundingMode)); |
| break; |
| case OPERATOR_SUBTRACT: |
| case OPERATOR_NEGATIVE: |
| resultValue = resultValue.subtract(calcop.calcValue(methodContext, scale, roundingMode)); |
| break; |
| case OPERATOR_MULTIPLY: |
| resultValue = resultValue.multiply(calcop.calcValue(methodContext, scale, roundingMode)); |
| break; |
| case OPERATOR_DIVIDE: |
| resultValue = resultValue.divide(calcop.calcValue(methodContext, scale, roundingMode), scale, roundingMode); |
| break; |
| } |
| } |
| } |
| return resultValue; |
| } |
| } |
| |
| /** |
| * Implements the <number> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini+Language+-+minilang+-+simple-method+-+Reference">Mini-language Reference</a> |
| */ |
| public final class NumberOp extends MiniLangElement implements SubCalc { |
| |
| private final FlexibleStringExpander valueFse; |
| |
| private NumberOp(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "value"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "value"); |
| MiniLangValidate.noChildElements(simpleMethod, element); |
| } |
| valueFse = FlexibleStringExpander.getInstance(element.getAttribute("value")); |
| } |
| |
| @Override |
| public BigDecimal calcValue(MethodContext methodContext, int scale, int roundingMode) throws MiniLangException { |
| String valueStr = valueFse.expandString(methodContext.getEnvMap()); |
| Locale locale = methodContext.getLocale(); |
| if (locale == null) |
| locale = Locale.getDefault(); |
| try { |
| BigDecimal parsedVal = (BigDecimal) MiniLangUtil.convertType(valueStr, java.math.BigDecimal.class, locale, null, null); |
| return parsedVal.setScale(scale, roundingMode); |
| } catch (Exception e) { |
| throw new MiniLangRuntimeException("Exception thrown while parsing value attribute: " + e.getMessage(), this); |
| } |
| } |
| } |
| |
| private final class InvalidOp extends MiniLangElement implements SubCalc { |
| |
| private InvalidOp(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| } |
| |
| @Override |
| public BigDecimal calcValue(MethodContext methodContext, int scale, int roundingMode) throws MiniLangException { |
| throw new MiniLangRuntimeException("Invalid calculate sub-element.", this); |
| } |
| } |
| |
| /** |
| * A factory for the <calculate> element. |
| */ |
| public static final class CalculateFactory implements Factory<Calculate> { |
| @Override |
| public Calculate createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new Calculate(element, simpleMethod); |
| } |
| |
| @Override |
| public String getName() { |
| return "calculate"; |
| } |
| } |
| } |
