1 | /*
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2 | * Copyright 2002,2004 The Apache Software Foundation
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | *
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16 | */
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17 | package org.apache.tools.ant.types;
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18 |
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19 | import java.util.Vector;
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20 | import org.apache.tools.ant.BuildException;
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21 |
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22 | /**
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23 | * An AntFileReader is a wrapper class that encloses the classname
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24 | * and configuration of a Configurable FilterReader.
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25 | *
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26 | */
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27 | public final class AntFilterReader
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28 | extends DataType
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29 | implements Cloneable {
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30 |
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31 | private String className;
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32 |
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33 | private final Vector parameters = new Vector();
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34 |
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35 | private Path classpath;
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36 |
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37 | public final void setClassName(final String className) {
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38 | this.className = className;
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39 | }
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40 |
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41 | public final String getClassName() {
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42 | return className;
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43 | }
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44 |
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45 | public final void addParam(final Parameter param) {
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46 | parameters.addElement(param);
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47 | }
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48 |
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49 | /**
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50 | * Set the classpath to load the FilterReader through (attribute).
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51 | */
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52 | public final void setClasspath(Path classpath) {
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53 | if (isReference()) {
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54 | throw tooManyAttributes();
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55 | }
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56 | if (this.classpath == null) {
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57 | this.classpath = classpath;
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58 | } else {
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59 | this.classpath.append(classpath);
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60 | }
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61 | }
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62 |
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63 | /**
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64 | * Set the classpath to load the FilterReader through (nested element).
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65 | */
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66 | public final Path createClasspath() {
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67 | if (isReference()) {
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68 | throw noChildrenAllowed();
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69 | }
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70 | if (this.classpath == null) {
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71 | this.classpath = new Path(getProject());
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72 | }
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73 | return this.classpath.createPath();
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74 | }
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75 |
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76 | /**
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77 | * Get the classpath
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78 | */
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79 | public final Path getClasspath() {
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80 | return classpath;
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81 | }
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82 |
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83 | /**
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84 | * Set the classpath to load the FilterReader through via
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85 | * reference (attribute).
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86 | */
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87 | public void setClasspathRef(Reference r) {
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88 | if (isReference()) {
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89 | throw tooManyAttributes();
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90 | }
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91 | createClasspath().setRefid(r);
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92 | }
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93 |
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94 | public final Parameter[] getParams() {
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95 | Parameter[] params = new Parameter[parameters.size()];
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96 | parameters.copyInto(params);
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97 | return params;
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98 | }
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99 |
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100 | /**
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101 | * Makes this instance in effect a reference to another AntFilterReader
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102 | * instance.
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103 | *
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104 | * <p>You must not set another attribute or nest elements inside
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105 | * this element if you make it a reference.</p>
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106 | *
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107 | * @param r the reference to which this instance is associated
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108 | * @exception BuildException if this instance already has been configured.
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109 | */
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110 | public void setRefid(Reference r) throws BuildException {
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111 | if (!parameters.isEmpty() || className != null
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112 | || classpath != null) {
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113 | throw tooManyAttributes();
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114 | }
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115 | // change this to get the objects from the other reference
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116 | Object o = r.getReferencedObject(getProject());
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117 | if (o instanceof AntFilterReader) {
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118 | AntFilterReader afr = (AntFilterReader) o;
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119 | setClassName(afr.getClassName());
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120 | setClasspath(afr.getClasspath());
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121 | Parameter[] p = afr.getParams();
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122 | if (p != null) {
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123 | for (int i = 0; i < p.length; i++) {
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124 | addParam(p[i]);
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125 | }
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126 | }
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127 | } else {
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128 | String msg = r.getRefId() + " doesn\'t refer to a FilterReader";
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129 | throw new BuildException(msg);
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130 | }
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131 |
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132 | super.setRefid(r);
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133 | }
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134 | }
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