svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.api / src / main / java / org / gvsig / expressionevaluator / ExpressionUtils.java @ 44644
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| 1 | 44163 | jjdelcerro | package org.gvsig.expressionevaluator; |
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| 2 | |||
| 3 | 44389 | jjdelcerro | import java.io.File; |
| 4 | 44397 | jjdelcerro | import org.apache.commons.lang3.ArrayUtils; |
| 5 | 44215 | jjdelcerro | import org.apache.commons.lang3.StringUtils; |
| 6 | 44198 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder.Value; |
| 7 | 44163 | jjdelcerro | |
| 8 | /**
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| 9 | *
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| 10 | * @author jjdelcerro
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| 11 | */
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| 12 | public class ExpressionUtils { |
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| 13 | |||
| 14 | public static boolean isEmpty(Expression expression) { |
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| 15 | return expression == null || expression.isEmpty(); |
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| 16 | } |
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| 17 | |||
| 18 | public static boolean isPhraseEmpty(Expression expression) { |
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| 19 | return expression == null || expression.isPhraseEmpty(); |
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| 20 | } |
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| 21 | |||
| 22 | public static Expression defaultIfEmpty(Expression expression, Expression defaultValue) { |
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| 23 | if( expression==null || expression.isEmpty() ) { |
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| 24 | return defaultValue;
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| 25 | } |
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| 26 | return expression;
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| 27 | } |
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| 28 | |||
| 29 | public static Expression defaultNullIfEmpty(Expression expression) { |
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| 30 | if( expression==null || expression.isEmpty() ) { |
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| 31 | return null; |
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| 32 | } |
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| 33 | return expression;
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| 34 | } |
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| 35 | |||
| 36 | public static Expression defaultIfPhraseEmpty(Expression expression, Expression defaultValue) { |
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| 37 | if( expression==null || expression.isPhraseEmpty() ) { |
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| 38 | return defaultValue;
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| 39 | } |
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| 40 | return expression;
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| 41 | } |
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| 42 | |||
| 43 | public static Expression defaultNullIfPhraseEmpty(Expression expression) { |
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| 44 | if( expression==null || expression.isPhraseEmpty() ) { |
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| 45 | return null; |
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| 46 | } |
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| 47 | return expression;
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| 48 | } |
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| 49 | |||
| 50 | public static Expression createExpression() { |
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| 51 | Expression expression = ExpressionEvaluatorLocator.getManager().createExpression();
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| 52 | return expression;
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| 53 | } |
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| 54 | |||
| 55 | public static Expression createExpression(String phrase) { |
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| 56 | 44215 | jjdelcerro | if( StringUtils.isBlank(phrase) ) {
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| 57 | return null; |
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| 58 | } |
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| 59 | 44163 | jjdelcerro | Expression expression = ExpressionEvaluatorLocator.getManager().createExpression();
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| 60 | expression.setPhrase(phrase); |
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| 61 | return expression;
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| 62 | } |
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| 63 | |||
| 64 | 44533 | jjdelcerro | // public static Expression createExpression(String phrase, String code, Script... scripts) {
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| 65 | // Expression expression = ExpressionEvaluatorLocator.getManager().createExpression();
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| 66 | // expression.setPhrase(phrase);
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| 67 | // expression.setUserScript(code);
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| 68 | // for (Script script : scripts) {
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| 69 | // expression.addScript(script);
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| 70 | // }
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| 71 | // return expression;
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| 72 | // }
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| 73 | //
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| 74 | // public static Expression createExpression(String phrase, String code, String languaje, Script... scripts) {
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| 75 | // Expression expression = ExpressionEvaluatorLocator.getManager().createExpression();
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| 76 | // expression.setPhrase(phrase);
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| 77 | // expression.setUserScript(code, languaje);
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| 78 | // for (Script script : scripts) {
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| 79 | // expression.addScript(script);
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| 80 | // }
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| 81 | // return expression;
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| 82 | // }
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| 83 | 44163 | jjdelcerro | |
| 84 | 44198 | jjdelcerro | public static ExpressionBuilder createExpressionBuilder() { |
| 85 | ExpressionBuilder builder = ExpressionEvaluatorLocator.getManager().createExpressionBuilder(); |
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| 86 | return builder;
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| 87 | } |
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| 88 | |||
| 89 | public static Code compile(String expression) { |
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| 90 | 44215 | jjdelcerro | if( StringUtils.isBlank(expression) ) {
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| 91 | return null; |
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| 92 | } |
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| 93 | 44198 | jjdelcerro | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
| 94 | Code code = manager.compile(expression); |
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| 95 | return code;
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| 96 | } |
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| 97 | |||
| 98 | 44346 | jjdelcerro | public static Object evaluate(String expression) { |
| 99 | return evaluate(null, expression); |
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| 100 | } |
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| 101 | |||
| 102 | 44198 | jjdelcerro | public static Object evaluate(SymbolTable symbolTable, String expression) { |
| 103 | 44215 | jjdelcerro | if( StringUtils.isBlank(expression) ) {
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| 104 | return null; |
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| 105 | } |
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| 106 | 44198 | jjdelcerro | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
| 107 | Object x = manager.evaluate(symbolTable, expression);
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| 108 | return x;
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| 109 | } |
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| 110 | |||
| 111 | public static Object evaluate(SymbolTable symbolTable, Code code) { |
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| 112 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 113 | Object x = manager.evaluate(symbolTable, code);
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| 114 | return x;
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| 115 | } |
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| 116 | |||
| 117 | public static Code optimize(SymbolTable symbolTable, Code code) { |
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| 118 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 119 | code = manager.optimize(symbolTable, code); |
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| 120 | return code;
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| 121 | } |
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| 122 | |||
| 123 | public static String toString(Value value, Formatter formatter) { |
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| 124 | if( value == null ) { |
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| 125 | return null; |
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| 126 | } |
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| 127 | if( formatter==null ) { |
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| 128 | formatter = ExpressionBuilder.EMPTY_FORMATTER; |
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| 129 | } |
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| 130 | return value.toString(formatter);
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| 131 | } |
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| 132 | |||
| 133 | public static String toString(Value value) { |
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| 134 | if( value == null ) { |
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| 135 | return null; |
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| 136 | } |
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| 137 | return value.toString(ExpressionBuilder.EMPTY_FORMATTER);
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| 138 | } |
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| 139 | |||
| 140 | public static String toString(Code code, Formatter formatter) { |
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| 141 | if( code == null ) { |
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| 142 | return null; |
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| 143 | } |
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| 144 | if( formatter==null ) { |
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| 145 | formatter = Code.EMPTY_FORMATTER; |
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| 146 | } |
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| 147 | return code.toString(formatter);
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| 148 | } |
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| 149 | |||
| 150 | public static String toString(Code code) { |
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| 151 | if( code == null ) { |
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| 152 | return null; |
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| 153 | } |
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| 154 | return code.toString(Code.EMPTY_FORMATTER);
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| 155 | } |
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| 156 | |||
| 157 | 44215 | jjdelcerro | public static Expression createExpressionFromJSON(String json) { |
| 158 | Expression expression = ExpressionUtils.createExpression();
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| 159 | expression.fromJSON(json); |
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| 160 | return expression;
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| 161 | } |
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| 162 | |||
| 163 | public static MutableSymbolTable createSymbolTable() { |
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| 164 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 165 | MutableSymbolTable symbolTable = manager.createSymbolTable(); |
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| 166 | return symbolTable;
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| 167 | } |
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| 168 | 44397 | jjdelcerro | |
| 169 | 44408 | jjdelcerro | public static String surroundByDynamicTextTag(String source) { |
| 170 | return surroundByDynamicTextTag(source, true); |
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| 171 | } |
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| 172 | |||
| 173 | public static String surroundByDynamicTextTag(String source, boolean insert) { |
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| 174 | if( source==null ) { |
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| 175 | return null; |
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| 176 | } |
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| 177 | if( insert ) {
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| 178 | return "<%=" + source + "%>"; |
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| 179 | } |
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| 180 | return "<%" + source + "%>"; |
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| 181 | } |
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| 182 | |||
| 183 | 44397 | jjdelcerro | public static boolean isDynamicText(String source) { |
| 184 | String[] sources = StringUtils.substringsBetween(source, "<%", "%>"); |
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| 185 | if( ArrayUtils.isEmpty(sources) ) {
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| 186 | return false; |
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| 187 | } |
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| 188 | return true; |
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| 189 | } |
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| 190 | 44215 | jjdelcerro | |
| 191 | 44397 | jjdelcerro | public static String evaluateDynamicText(String source) { |
| 192 | 44389 | jjdelcerro | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
| 193 | 44397 | jjdelcerro | return manager.evaluateDynamicText(source);
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| 194 | 44389 | jjdelcerro | } |
| 195 | |||
| 196 | 44397 | jjdelcerro | public static String evaluateDynamicText(SymbolTable symbolTable, String source) { |
| 197 | 44389 | jjdelcerro | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
| 198 | 44397 | jjdelcerro | return manager.evaluateDynamicText(symbolTable, source);
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| 199 | 44389 | jjdelcerro | } |
| 200 | |||
| 201 | 44390 | jjdelcerro | public static File evaluateFilename(File source) { |
| 202 | 44389 | jjdelcerro | return evaluateFilename(null, source); |
| 203 | } |
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| 204 | 44397 | jjdelcerro | |
| 205 | public static boolean isDynamicFilename(File source) { |
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| 206 | if( source == null ) { |
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| 207 | return false; |
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| 208 | } |
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| 209 | return isDynamicText(source.getPath());
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| 210 | } |
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| 211 | 44389 | jjdelcerro | |
| 212 | @SuppressWarnings("StringEquality") |
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| 213 | 44390 | jjdelcerro | public static File evaluateFilename(SymbolTable symbolTable, File source) { |
| 214 | 44389 | jjdelcerro | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
| 215 | String src = source.getPath();
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| 216 | 44397 | jjdelcerro | String r = manager.evaluateDynamicText(symbolTable, src);
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| 217 | 44389 | jjdelcerro | if( r == src ) { // !!! I compare that it is the same pointer, it is what I want. |
| 218 | return source;
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| 219 | } |
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| 220 | File f = new File(r); |
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| 221 | return f;
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| 222 | } |
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| 223 | 44444 | jjdelcerro | |
| 224 | public static int parseInt(String s) throws NumberFormatException { |
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| 225 | if( StringUtils.isBlank(s) ) {
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| 226 | throw new NumberFormatException("Can't get integer from a blank string."); |
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| 227 | } |
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| 228 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 229 | 44446 | jjdelcerro | SymbolTable symbolTable = null; //manager.getInmutableSymbolTable(); |
| 230 | 44444 | jjdelcerro | Object x;
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| 231 | try {
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| 232 | x = manager.evaluate(symbolTable, s); |
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| 233 | if( x instanceof Number ) { |
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| 234 | return ((Number) x).intValue(); |
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| 235 | } |
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| 236 | } catch(Exception ex) { |
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| 237 | NumberFormatException ex1 = new NumberFormatException("Can't get integer from '"+s+"'."); |
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| 238 | ex1.initCause(ex); |
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| 239 | throw ex;
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| 240 | } |
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| 241 | if( x == null ) { |
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| 242 | throw new NumberFormatException("Can't get integer from '"+s+"' value is null."); |
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| 243 | } |
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| 244 | throw new NumberFormatException("Can't get integer from '"+s+"' value is a "+x.getClass().getSimpleName()+"."); |
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| 245 | } |
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| 246 | |||
| 247 | public static long parseLong(String s) throws NumberFormatException { |
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| 248 | if( StringUtils.isBlank(s) ) {
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| 249 | throw new NumberFormatException("Can't get long from a blank string."); |
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| 250 | } |
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| 251 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 252 | 44446 | jjdelcerro | SymbolTable symbolTable = null; //manager.getInmutableSymbolTable(); |
| 253 | 44444 | jjdelcerro | Object x;
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| 254 | try {
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| 255 | x = manager.evaluate(symbolTable, s); |
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| 256 | if( x instanceof Number ) { |
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| 257 | return ((Number) x).longValue(); |
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| 258 | } |
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| 259 | } catch(Exception ex) { |
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| 260 | NumberFormatException ex1 = new NumberFormatException("Can't get long from '"+s+"'."); |
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| 261 | ex1.initCause(ex); |
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| 262 | throw ex;
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| 263 | } |
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| 264 | if( x == null ) { |
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| 265 | throw new NumberFormatException("Can't get long from '"+s+"' value is null."); |
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| 266 | } |
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| 267 | throw new NumberFormatException("Can't get long from '"+s+"' value is a "+x.getClass().getSimpleName()+"."); |
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| 268 | } |
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| 269 | |||
| 270 | public static double parseDouble(String s) throws NumberFormatException { |
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| 271 | if( StringUtils.isBlank(s) ) {
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| 272 | throw new NumberFormatException("Can't get double from a blank string."); |
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| 273 | } |
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| 274 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 275 | 44446 | jjdelcerro | SymbolTable symbolTable = null; //manager.getInmutableSymbolTable(); |
| 276 | 44444 | jjdelcerro | Object x;
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| 277 | try {
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| 278 | x = manager.evaluate(symbolTable, s); |
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| 279 | if( x instanceof Number ) { |
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| 280 | return ((Number) x).doubleValue(); |
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| 281 | } |
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| 282 | } catch(Exception ex) { |
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| 283 | NumberFormatException ex1 = new NumberFormatException("Can't get double from '"+s+"'."); |
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| 284 | ex1.initCause(ex); |
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| 285 | throw ex;
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| 286 | } |
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| 287 | if( x == null ) { |
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| 288 | throw new NumberFormatException("Can't get double from '"+s+"' value is null."); |
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| 289 | } |
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| 290 | throw new NumberFormatException("Can't get double from '"+s+"' value is a "+x.getClass().getSimpleName()+"."); |
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| 291 | } |
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| 292 | 44644 | jjdelcerro | |
| 293 | public static Compiler createCompiler() { |
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| 294 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 295 | Compiler compiler = manager.createCompiler();
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| 296 | return compiler;
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| 297 | } |
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| 298 | |||
| 299 | public static Interpreter createInterpreter() { |
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| 300 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 301 | Interpreter interpreter = manager.createInterpreter(); |
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| 302 | return interpreter;
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| 303 | } |
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| 304 | |||
| 305 | public static Optimizer createOptimizer() { |
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| 306 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 307 | Optimizer optimizer = manager.createOptimizer(); |
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| 308 | return optimizer;
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| 309 | } |
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| 310 | |||
| 311 | public static String repr(Object value) { |
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| 312 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 313 | ReprMethod method = manager.getReprMethod(value); |
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| 314 | return method.repr(value);
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| 315 | } |
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| 316 | 44163 | jjdelcerro | } |