diff options
Diffstat (limited to 'src/main/java/org/onap/aai/validation/ruledriven/configuration/build/ContentBuilder.java')
| -rw-r--r-- | src/main/java/org/onap/aai/validation/ruledriven/configuration/build/ContentBuilder.java | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/main/java/org/onap/aai/validation/ruledriven/configuration/build/ContentBuilder.java b/src/main/java/org/onap/aai/validation/ruledriven/configuration/build/ContentBuilder.java new file mode 100644 index 0000000..320e29e --- /dev/null +++ b/src/main/java/org/onap/aai/validation/ruledriven/configuration/build/ContentBuilder.java @@ -0,0 +1,198 @@ +/* + * ============LICENSE_START=================================================== + * Copyright (c) 2018 Amdocs + * ============================================================================ + * 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. + * ============LICENSE_END===================================================== + */ +package org.onap.aai.validation.ruledriven.configuration.build; + +import java.util.ArrayList; +import java.util.Enumeration; +import java.util.List; +import java.util.Properties; + + +/** + * Helper class for building internal configuration settings. + */ +public class ContentBuilder { + + private final String contentName; + protected List<ContentBuilder> items = new ArrayList<>(); + private StringBuilder content = new StringBuilder(); + protected String indent = ""; + + /** + * Construct an empty section. + */ + public ContentBuilder() { + this.contentName = null; + } + + /** + * Instantiates a new content builder. + * + * @param contentName + * the content name + */ + public ContentBuilder(String contentName) { + this.contentName = contentName; + } + + @Override + public String toString() { + return build(); + } + + /** + * Builds the configuration section + * + * @return the configuration as a string + */ + public String build() { + StringBuilder sb = new StringBuilder(); + appendPrefix(sb); + // Build child items + for (ContentBuilder item : items) { + sb.append(item.build()); + } + // Any ad-hoc content goes here + sb.append(content); + appendSuffix(sb); + return sb.toString(); + } + + /** + * Adds the content. + * + * @param item + * the item + */ + public void addContent(ContentBuilder item) { + items.add(item); + } + + /** + * Adds the content. + * + * @param stringContent + * the string content + */ + public void addContent(String stringContent) { + content.append(stringContent); + } + + /** + * Append content as a new line. + * + * @param stringContent + * the string + */ + public void appendLine(String stringContent) { + content.append(indent).append(stringContent).append(System.lineSeparator()); + } + + /** + * Append properties. + * + * @param props + * the props + */ + public void appendProperties(Properties props) { + @SuppressWarnings("unchecked") + Enumeration<String> e = (Enumeration<String>) props.propertyNames(); + while (e.hasMoreElements()) { + String key = e.nextElement(); + appendValue(key, props.get(key)); + } + } + + /** + * Append value. + * + * @param key + * the key + * @param value + * the value + * @return + */ + public ContentBuilder appendValue(String key, Object value) { + if (value == null) { + return this; + } + + addContent(indent + "\t" + key + " "); + + if (value instanceof String) { + addStringValue((String) value); + } else if (value instanceof Number) { + addStringValue(value.toString()); + } else if (value instanceof List<?>) { + boolean first = true; + for (Object element : (List<?>) value) { + if (!first) { + addContent(", "); + } + addStringValue((String) element); + first = false; + } + } else if (value instanceof Properties) { + appendLine("{"); + appendProperties((Properties) value); + appendLine("}"); + } else { + throw new IllegalArgumentException(key); + } + addContent(System.lineSeparator()); + + return this; + } + + /** + * Adds the string value. + * + * @param value + * the value + */ + private void addStringValue(String value) { + addContent("'" + value + "'"); + } + + /** + * Append suffix. + * + * @param sb + * the sb + */ + private void appendSuffix(StringBuilder sb) { + if (contentName != null) { + sb.append(indent).append("}").append(System.lineSeparator()); + } + } + + /** + * Append prefix. + * + * @param sb + * the sb + */ + private void appendPrefix(StringBuilder sb) { + if (contentName != null) { + sb.append(indent); + sb.append(contentName); + sb.append(" {").append(System.lineSeparator()); + } + } + +}
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