svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultExpression.java @ 44191
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| 1 | 43983 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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| 2 | |||
| 3 | import java.net.URI; |
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| 4 | import java.util.ArrayList; |
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| 5 | import java.util.Iterator; |
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| 6 | import java.util.List; |
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| 7 | import org.apache.commons.lang3.StringUtils; |
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| 8 | import org.gvsig.expressionevaluator.Code; |
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| 9 | import org.gvsig.expressionevaluator.Expression; |
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| 10 | import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator; |
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| 11 | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
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| 12 | import org.gvsig.expressionevaluator.Interpreter; |
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| 13 | 44009 | jjdelcerro | import org.gvsig.expressionevaluator.Optimizer; |
| 14 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTable; |
| 15 | import org.gvsig.tools.ToolsLocator; |
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| 16 | import org.gvsig.tools.dynobject.DynStruct; |
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| 17 | import org.gvsig.tools.persistence.PersistenceManager; |
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| 18 | import org.gvsig.tools.persistence.PersistentState; |
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| 19 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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| 20 | import org.gvsig.tools.script.Script; |
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| 21 | import org.gvsig.tools.script.ScriptManager; |
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| 22 | import org.gvsig.tools.util.UnmodifiableBasicList; |
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| 23 | import org.gvsig.tools.util.UnmodifiableBasicListAdapter; |
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| 24 | 43984 | jjdelcerro | import org.json.JSONArray; |
| 25 | import org.json.JSONObject; |
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| 26 | 43983 | jjdelcerro | |
| 27 | /**
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| 28 | *
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| 29 | * @author jjdelcerro
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| 30 | */
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| 31 | public class DefaultExpression implements Expression { |
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| 32 | |||
| 33 | private String phrase = null; |
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| 34 | private Script userScript = null; |
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| 35 | private List<Script> scripts = null; |
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| 36 | private UnmodifiableBasicList<Script> unmodifiableScripts = null; |
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| 37 | |||
| 38 | private Code code = null; |
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| 39 | private Interpreter interpreter;
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| 40 | 44009 | jjdelcerro | private boolean hasNotBeenOptimized = true; |
| 41 | 43983 | jjdelcerro | |
| 42 | public DefaultExpression() {
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| 43 | |||
| 44 | } |
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| 45 | |||
| 46 | @Override
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| 47 | public String getPhrase() { |
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| 48 | return this.phrase; |
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| 49 | } |
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| 50 | |||
| 51 | @Override
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| 52 | 44126 | jjdelcerro | public boolean isPhraseEmpty() { |
| 53 | return StringUtils.isBlank(this.phrase); |
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| 54 | } |
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| 55 | |||
| 56 | @Override
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| 57 | 44163 | jjdelcerro | public boolean isEmpty() { |
| 58 | if( !StringUtils.isBlank(this.phrase) ) { |
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| 59 | return false; |
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| 60 | } |
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| 61 | if( this.scripts!=null && !this.scripts.isEmpty() ) { |
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| 62 | return false; |
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| 63 | } |
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| 64 | 44182 | jjdelcerro | if( this.userScript!=null && !StringUtils.isBlank(this.userScript.getCode()) ) { |
| 65 | 44163 | jjdelcerro | return false; |
| 66 | } |
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| 67 | return true; |
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| 68 | } |
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| 69 | |||
| 70 | @Override
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| 71 | 43983 | jjdelcerro | public Script getUserScript() {
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| 72 | return this.userScript; |
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| 73 | } |
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| 74 | |||
| 75 | @Override
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| 76 | public UnmodifiableBasicList<Script> getScripts() {
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| 77 | if (this.unmodifiableScripts == null) { |
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| 78 | if (this.scripts == null) { |
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| 79 | return null; |
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| 80 | } |
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| 81 | this.unmodifiableScripts = new UnmodifiableBasicListAdapter<>(this.scripts); |
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| 82 | } |
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| 83 | return this.unmodifiableScripts; |
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| 84 | } |
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| 85 | |||
| 86 | @Override
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| 87 | 44163 | jjdelcerro | public Expression setPhrase(String phrase) { |
| 88 | 43983 | jjdelcerro | this.phrase = phrase;
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| 89 | this.code = null; |
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| 90 | 44009 | jjdelcerro | this.hasNotBeenOptimized = true; |
| 91 | 44163 | jjdelcerro | return this; |
| 92 | 43983 | jjdelcerro | } |
| 93 | |||
| 94 | @Override
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| 95 | 44163 | jjdelcerro | public Expression setUserScript(String code, String languaje) { |
| 96 | 43983 | jjdelcerro | if (this.userScript == null) { |
| 97 | ScriptManager scriptMananger = ToolsLocator.getScriptManager(); |
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| 98 | this.userScript = scriptMananger.createScript("user", code, languaje); |
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| 99 | } else if (this.userScript.getTypeName().equalsIgnoreCase(languaje)) { |
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| 100 | this.userScript.setCode(code);
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| 101 | } else {
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| 102 | ScriptManager scriptMananger = ToolsLocator.getScriptManager(); |
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| 103 | this.userScript = scriptMananger.createScript("user", code, languaje); |
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| 104 | } |
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| 105 | 44163 | jjdelcerro | return this; |
| 106 | 43983 | jjdelcerro | } |
| 107 | |||
| 108 | @Override
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| 109 | 44163 | jjdelcerro | public Expression setUserScript(Script script) { |
| 110 | 43983 | jjdelcerro | this.userScript = script;
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| 111 | 44163 | jjdelcerro | return this; |
| 112 | 43983 | jjdelcerro | } |
| 113 | |||
| 114 | @Override
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| 115 | 44163 | jjdelcerro | public Expression setUserScript(String code) { |
| 116 | 43983 | jjdelcerro | this.setUserScript(code, "python"); |
| 117 | 44163 | jjdelcerro | return this; |
| 118 | 43983 | jjdelcerro | } |
| 119 | |||
| 120 | @Override
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| 121 | public void removeAllScripts() { |
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| 122 | this.scripts = null; |
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| 123 | this.unmodifiableScripts = null; |
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| 124 | } |
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| 125 | |||
| 126 | @Override
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| 127 | 44163 | jjdelcerro | public Expression addScript(Script script) { |
| 128 | 43983 | jjdelcerro | if (this.scripts == null) { |
| 129 | this.scripts = new ArrayList<>(); |
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| 130 | } |
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| 131 | this.scripts.add(script);
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| 132 | 44163 | jjdelcerro | return this; |
| 133 | 43983 | jjdelcerro | } |
| 134 | |||
| 135 | @Override
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| 136 | 43984 | jjdelcerro | public void clear() { |
| 137 | this.phrase = null; |
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| 138 | this.userScript = null; |
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| 139 | this.unmodifiableScripts = null; |
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| 140 | this.scripts = null; |
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| 141 | this.code = null; |
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| 142 | this.interpreter = null; |
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| 143 | 44009 | jjdelcerro | this.hasNotBeenOptimized = true; |
| 144 | 43984 | jjdelcerro | } |
| 145 | |||
| 146 | @Override
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| 147 | 43989 | jjdelcerro | public Code getCode() {
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| 148 | 43983 | jjdelcerro | if (this.code == null) { |
| 149 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 150 | this.code = manager.compile(this.phrase); |
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| 151 | } |
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| 152 | 43989 | jjdelcerro | return code;
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| 153 | } |
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| 154 | |||
| 155 | @Override
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| 156 | 44191 | jjdelcerro | public void setSQLCompatible(boolean sqlCompatible) { |
| 157 | this.getInterpreter().setSQLCompatible(sqlCompatible);
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| 158 | } |
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| 159 | |||
| 160 | @Override
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| 161 | public boolean isSQLCompatible() { |
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| 162 | return this.getInterpreter().isSQLCompatible(); |
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| 163 | } |
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| 164 | |||
| 165 | private Interpreter getInterpreter() {
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| 166 | if (this.interpreter == null) { |
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| 167 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 168 | this.interpreter = manager.createInterpreter();
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| 169 | } |
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| 170 | return this.interpreter; |
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| 171 | } |
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| 172 | |||
| 173 | @Override
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| 174 | 43989 | jjdelcerro | public Object execute(SymbolTable symbolTable) { |
| 175 | 43983 | jjdelcerro | if (this.interpreter == null) { |
| 176 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 177 | this.interpreter = manager.createInterpreter();
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| 178 | } |
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| 179 | this.interpreter.setSymbolTable(symbolTable);
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| 180 | 44009 | jjdelcerro | if( this.hasNotBeenOptimized ) { |
| 181 | Optimizer optimizer = new DefaultOptimizer(symbolTable);
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| 182 | this.code = optimizer.optimize(this.getCode()); |
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| 183 | this.hasNotBeenOptimized = false; |
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| 184 | } |
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| 185 | 43989 | jjdelcerro | Object x = this.interpreter.run(this.getCode()); |
| 186 | 43983 | jjdelcerro | return x;
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| 187 | } |
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| 188 | |||
| 189 | @Override
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| 190 | 44191 | jjdelcerro | public void link(SymbolTable symbolTable) { |
| 191 | if (this.interpreter == null) { |
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| 192 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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| 193 | this.interpreter = manager.createInterpreter();
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| 194 | } |
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| 195 | this.interpreter.setSymbolTable(symbolTable);
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| 196 | if( this.hasNotBeenOptimized ) { |
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| 197 | Optimizer optimizer = new DefaultOptimizer(symbolTable);
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| 198 | this.code = optimizer.optimize(this.getCode()); |
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| 199 | this.hasNotBeenOptimized = false; |
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| 200 | } |
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| 201 | this.interpreter.link(this.getCode()); |
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| 202 | } |
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| 203 | |||
| 204 | @Override
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| 205 | 43983 | jjdelcerro | public void saveToState(PersistentState state) throws PersistenceException { |
| 206 | state.set("phrase", this.phrase); |
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| 207 | if (this.userScript == null) { |
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| 208 | 43991 | jjdelcerro | state.setNull("userScript_code");
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| 209 | state.setNull("userScript_language");
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| 210 | 43983 | jjdelcerro | } else {
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| 211 | 43991 | jjdelcerro | state.set("userScript_code", this.userScript.getCode()); |
| 212 | state.set("userScript_language", this.userScript.getTypeName()); |
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| 213 | 43983 | jjdelcerro | } |
| 214 | if (this.scripts != null && !this.scripts.isEmpty()) { |
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| 215 | List<URI> l = new ArrayList<>(); |
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| 216 | for (Script script : this.scripts) { |
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| 217 | URI location = script.getURI();
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| 218 | if (location != null) { |
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| 219 | l.add(location); |
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| 220 | } |
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| 221 | } |
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| 222 | if (l.isEmpty()) {
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| 223 | state.setNull("scripts");
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| 224 | } else {
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| 225 | state.set("scripts", l);
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| 226 | } |
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| 227 | } else {
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| 228 | state.setNull("scripts");
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| 229 | } |
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| 230 | } |
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| 231 | |||
| 232 | @Override
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| 233 | public void loadFromState(PersistentState state) throws PersistenceException { |
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| 234 | ScriptManager scriptManager = ToolsLocator.getScriptManager(); |
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| 235 | |||
| 236 | 44009 | jjdelcerro | this.clear();
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| 237 | |||
| 238 | 43983 | jjdelcerro | this.phrase = state.getString("phrase"); |
| 239 | 43991 | jjdelcerro | String userScript_code = state.getString("userScript_code"); |
| 240 | String userScript_language = state.getString("userScript_language"); |
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| 241 | 43983 | jjdelcerro | if (StringUtils.isEmpty(userScript_code)) {
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| 242 | this.userScript = null; |
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| 243 | } else {
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| 244 | if (StringUtils.isEmpty(userScript_language)) {
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| 245 | userScript_language = "python";
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| 246 | } |
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| 247 | this.userScript = scriptManager.createScript("user", userScript_code, userScript_language); |
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| 248 | } |
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| 249 | Iterator scriptsLocations = state.getIterator("scripts"); |
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| 250 | 43991 | jjdelcerro | if (scriptsLocations != null) { |
| 251 | while (scriptsLocations.hasNext()) {
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| 252 | URI location = (URI) scriptsLocations.next(); |
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| 253 | Script script = scriptManager.loadScript(location); |
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| 254 | if (script != null) { |
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| 255 | if (this.scripts == null) { |
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| 256 | this.scripts = new ArrayList<>(); |
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| 257 | } |
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| 258 | this.scripts.add(script);
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| 259 | 43983 | jjdelcerro | } |
| 260 | } |
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| 261 | } |
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| 262 | } |
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| 263 | |||
| 264 | public static void registerPersistence() { |
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| 265 | PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
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| 266 | if (manager.getDefinition("Expression") == null) { |
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| 267 | DynStruct definition = manager.addDefinition(DefaultExpression.class, |
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| 268 | "Expression", "Expression persistence definition", null, null); |
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| 269 | definition.addDynFieldString("phrase").setMandatory(false); |
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| 270 | 43991 | jjdelcerro | definition.addDynFieldString("userScript_code").setMandatory(false); |
| 271 | definition.addDynFieldString("userScript_language").setMandatory(false); |
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| 272 | 44190 | jjdelcerro | definition.addDynFieldList("scripts")
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| 273 | .setClassOfItems(URI.class)
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| 274 | .setMandatory(false);
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| 275 | 43983 | jjdelcerro | } |
| 276 | } |
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| 277 | |||
| 278 | @Override
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| 279 | 43984 | jjdelcerro | public String toJSON() { |
| 280 | JSONObject expressionJson = new JSONObject();
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| 281 | expressionJson.put("phrase", this.phrase); |
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| 282 | 43991 | jjdelcerro | |
| 283 | if (this.userScript != null) { |
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| 284 | 43984 | jjdelcerro | JSONObject userScriptJson = new JSONObject();
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| 285 | userScriptJson.put("code", this.userScript.getCode()); |
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| 286 | userScriptJson.put("language", this.userScript.getTypeName()); |
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| 287 | expressionJson.put("userScript", userScriptJson);
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| 288 | 43983 | jjdelcerro | } |
| 289 | 43991 | jjdelcerro | |
| 290 | if (this.scripts != null && !this.scripts.isEmpty()) { |
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| 291 | 43984 | jjdelcerro | JSONArray scriptsJson = new JSONArray();
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| 292 | 43983 | jjdelcerro | for (Script script : this.scripts) { |
| 293 | 43984 | jjdelcerro | scriptsJson.put(script.getURI()); |
| 294 | 43983 | jjdelcerro | } |
| 295 | 43984 | jjdelcerro | expressionJson.put("scripts", scriptsJson);
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| 296 | } |
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| 297 | return expressionJson.toString();
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| 298 | } |
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| 299 | |||
| 300 | @Override
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| 301 | public void fromJSON(String json) { |
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| 302 | this.clear();
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| 303 | ScriptManager scriptMananger = ToolsLocator.getScriptManager(); |
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| 304 | |||
| 305 | JSONObject expressionJson = new JSONObject(json);
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| 306 | 43991 | jjdelcerro | if (expressionJson.has("phrase")) { |
| 307 | 43984 | jjdelcerro | this.phrase = expressionJson.getString("phrase"); |
| 308 | } |
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| 309 | 43991 | jjdelcerro | if (expressionJson.has("userScript")) { |
| 310 | 43984 | jjdelcerro | String theCode = ""; |
| 311 | String theLanguage = "python"; |
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| 312 | JSONObject userScriptJson = expressionJson.getJSONObject("userScript");
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| 313 | 43991 | jjdelcerro | if (userScriptJson.has("code")) { |
| 314 | 43984 | jjdelcerro | theCode = userScriptJson.getString("code");
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| 315 | 43983 | jjdelcerro | } |
| 316 | 43991 | jjdelcerro | if (userScriptJson.has("language")) { |
| 317 | 43984 | jjdelcerro | theCode = userScriptJson.getString("language");
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| 318 | } |
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| 319 | this.userScript = scriptMananger.createScript("user", theCode, theLanguage); |
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| 320 | 43983 | jjdelcerro | } |
| 321 | 43991 | jjdelcerro | if (expressionJson.has("scripts")) { |
| 322 | 43984 | jjdelcerro | this.scripts = new ArrayList<>(); |
| 323 | JSONArray scriptsJson = expressionJson.getJSONArray("scripts");
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| 324 | for (Object object : scriptsJson) { |
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| 325 | URI location = (URI) object; |
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| 326 | Script script = scriptMananger.loadScript(location); |
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| 327 | this.scripts.add(script);
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| 328 | } |
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| 329 | 43983 | jjdelcerro | } |
| 330 | } |
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| 331 | |||
| 332 | 43984 | jjdelcerro | @Override
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| 333 | public String toString() { |
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| 334 | return this.toJSON(); |
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| 335 | } |
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| 336 | |||
| 337 | @Override
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| 338 | public Expression clone() throws CloneNotSupportedException { |
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| 339 | Expression other = (Expression) super.clone(); |
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| 340 | other.fromJSON(this.toJSON());
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| 341 | return other;
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| 342 | } |
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| 343 | |||
| 344 | 43983 | jjdelcerro | } |